---
OA_place: repository
OA_type: green
_id: '21700'
abstract:
- lang: eng
text: We provide a theoretical framework to describe the dynamics of a free-electron
beam interacting with quantized bound systems in arbitrary electromagnetic environments.
This expands the quantum optics toolbox to incorporate free-electron beams for
applications in highly tunable quantum control, imaging, and spectroscopy at the
nanoscale. The framework recovers previously studied results and shows that electromagnetic
environments can amplify the intrinsically weak coupling between a free-electron
and a bound electron to reach previously inaccessible interaction regimes. We
leverage this enhanced coupling for experimentally feasible protocols in coherent
qubit control and towards the nondestructive readout and projective control of
the electron beam's quantum-number statistics. Our framework is broadly applicable
to microwave-frequency qubits, optical nanophotonics, cavity quantum electrodynamics,
and emerging platforms at the interface of electron microscopy and quantum information.
article_number: '2601.21385'
article_processing_charge: No
arxiv: 1
author:
- first_name: Jakob M.
full_name: Grzesik, Jakob M.
last_name: Grzesik
- first_name: Aviv
full_name: Karnieli, Aviv
last_name: Karnieli
- first_name: Charles
full_name: Roques-Carmes, Charles
id: e2e68fc9-6505-11ef-a541-eb4e72cc3e82
last_name: Roques-Carmes
- first_name: Dylan S.
full_name: Black, Dylan S.
last_name: Black
- first_name: Trung Kiên
full_name: Lê, Trung Kiên
last_name: Lê
- first_name: Olav
full_name: Solgaard, Olav
last_name: Solgaard
- first_name: Shanhui
full_name: Fan, Shanhui
last_name: Fan
- first_name: Jelena
full_name: Vučković, Jelena
last_name: Vučković
citation:
ama: Grzesik JM, Karnieli A, Roques-Carmes C, et al. A general framework for interactions
between electron beams and quantum optical systems. arXiv. doi:10.48550/arXiv.2601.21385
apa: Grzesik, J. M., Karnieli, A., Roques-Carmes, C., Black, D. S., Lê, T. K., Solgaard,
O., … Vučković, J. (n.d.). A general framework for interactions between electron
beams and quantum optical systems. arXiv. https://doi.org/10.48550/arXiv.2601.21385
chicago: Grzesik, Jakob M., Aviv Karnieli, Charles Roques-Carmes, Dylan S. Black,
Trung Kiên Lê, Olav Solgaard, Shanhui Fan, and Jelena Vučković. “A General Framework
for Interactions between Electron Beams and Quantum Optical Systems.” ArXiv,
n.d. https://doi.org/10.48550/arXiv.2601.21385.
ieee: J. M. Grzesik et al., “A general framework for interactions between
electron beams and quantum optical systems,” arXiv. .
ista: Grzesik JM, Karnieli A, Roques-Carmes C, Black DS, Lê TK, Solgaard O, Fan
S, Vučković J. A general framework for interactions between electron beams and
quantum optical systems. arXiv, 2601.21385.
mla: Grzesik, Jakob M., et al. “A General Framework for Interactions between Electron
Beams and Quantum Optical Systems.” ArXiv, 2601.21385, doi:10.48550/arXiv.2601.21385.
short: J.M. Grzesik, A. Karnieli, C. Roques-Carmes, D.S. Black, T.K. Lê, O. Solgaard,
S. Fan, J. Vučković, ArXiv (n.d.).
date_created: 2026-04-09T09:10:41Z
date_published: 2026-01-29T00:00:00Z
date_updated: 2026-04-13T11:28:06Z
day: '29'
doi: 10.48550/arXiv.2601.21385
extern: '1'
external_id:
arxiv:
- '2601.21385'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2601.21385
month: '01'
oa: 1
oa_version: Preprint
publication: arXiv
publication_status: submitted
scopus_import: '1'
status: public
title: A general framework for interactions between electron beams and quantum optical
systems
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2026'
...
---
OA_place: repository
OA_type: green
_id: '21701'
abstract:
- lang: eng
text: Polarization-resolved control and measurement of the optical field are essential
for a wide range of photonic systems, including coherent communication, polarimetric
sensing, and quantum information processing. We present a photonic integrated
circuit that enables the generation and analysis of arbitrary polarization states.
The device provides reconfigurable access to the full polarization degree of freedom
of coherent light within a single integrated platform. We experimentally demonstrate
arbitrary polarization state generation spanning the Poincare sphere, as well
as Stokes vector measurement on chip. Unlike conventional Stokes measurements
that rely on direct detection, polarization analysis utilizing this architecture
is intrinsically non-destructive, preserving the optical signal for further optical
domain processing. The devices are fabricated in a commercial foundry using CMOS-compatible
processes, enabling scalable and reproducible integration. By combining polarization
generation and analysis in a compact and stable photonic circuit, this work eliminates
the need for external polarization optics and provides a foundation for robust,
polarization-enabled photonic integrated systems.
article_number: '2602.17024'
article_processing_charge: No
arxiv: 1
author:
- first_name: Carson G.
full_name: Valdez, Carson G.
last_name: Valdez
- first_name: Anne R.
full_name: Kroo, Anne R.
last_name: Kroo
- first_name: Anna J.
full_name: Miller, Anna J.
last_name: Miller
- first_name: Charles
full_name: Roques-Carmes, Charles
id: e2e68fc9-6505-11ef-a541-eb4e72cc3e82
last_name: Roques-Carmes
- first_name: David A. B.
full_name: Miller, David A. B.
last_name: Miller
- first_name: Olav
full_name: Solgaard, Olav
last_name: Solgaard
citation:
ama: Valdez CG, Kroo AR, Miller AJ, Roques-Carmes C, Miller DAB, Solgaard O. Integrated
photonic polarization synthesizer and analyzer. arXiv. doi:10.48550/arXiv.2602.17024
apa: Valdez, C. G., Kroo, A. R., Miller, A. J., Roques-Carmes, C., Miller, D. A.
B., & Solgaard, O. (n.d.). Integrated photonic polarization synthesizer and
analyzer. arXiv. https://doi.org/10.48550/arXiv.2602.17024
chicago: Valdez, Carson G., Anne R. Kroo, Anna J. Miller, Charles Roques-Carmes,
David A. B. Miller, and Olav Solgaard. “Integrated Photonic Polarization Synthesizer
and Analyzer.” ArXiv, n.d. https://doi.org/10.48550/arXiv.2602.17024.
ieee: C. G. Valdez, A. R. Kroo, A. J. Miller, C. Roques-Carmes, D. A. B. Miller,
and O. Solgaard, “Integrated photonic polarization synthesizer and analyzer,”
arXiv. .
ista: Valdez CG, Kroo AR, Miller AJ, Roques-Carmes C, Miller DAB, Solgaard O. Integrated
photonic polarization synthesizer and analyzer. arXiv, 2602.17024.
mla: Valdez, Carson G., et al. “Integrated Photonic Polarization Synthesizer and
Analyzer.” ArXiv, 2602.17024, doi:10.48550/arXiv.2602.17024.
short: C.G. Valdez, A.R. Kroo, A.J. Miller, C. Roques-Carmes, D.A.B. Miller, O.
Solgaard, ArXiv (n.d.).
date_created: 2026-04-09T09:10:41Z
date_published: 2026-02-19T00:00:00Z
date_updated: 2026-04-13T11:25:12Z
day: '19'
doi: 10.48550/arXiv.2602.17024
extern: '1'
external_id:
arxiv:
- '2602.17024 '
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2602.17024
month: '02'
oa: 1
oa_version: Preprint
publication: arXiv
publication_status: submitted
scopus_import: '1'
status: public
title: Integrated photonic polarization synthesizer and analyzer
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2026'
...
---
OA_place: repository
OA_type: green
_id: '21291'
abstract:
- lang: eng
text: The complexity and specificity of movement in vertebrates is driven by a rich
diversity of spinal motor and interneuron cell types. During development, eleven
spinal cord progenitor domains generate an equivalent number of cardinal neuron
types. How progenitor domains, individual progenitors, and post-mitotic diversity
relate is still unknown. We performed high-resolution, single-progenitor cell
lineage tracing in the embryonic mouse spinal cord using mosaic analysis with
double markers (MADM). Our quantitative study of lineage progression revealed
that spinal cord progenitors undergo highly variable numbers of proliferative,
neurogenic, and gliogenic cell divisions. The nascent clonally-related neurons
migrate radially over large distances, span the dorsoventral axis, and even cross
the midline, demonstrating striking bilaterality. Molecular and morphometric analysis
indicate high levels of progenitor multipotency, with an individual progenitor
capable of producing several molecularly and morphologically distinct neuron types,
as well as astrocytes. These findings redefine spinal cord development as a process
in which lineage variability — rather than rigid progenitor identity — drives
the generation of cellular diversity.
acknowledged_ssus:
- _id: PreCl
- _id: Bio
acknowledgement: "We would like to thank Elizabeth Marin, Anna Kicheva, Igor Adameyko,
and James Briscoe as\r\nwell as members of the Sweeney and Hippemeyer labs and SFB
consortium for comments on\r\nthe manuscript. We are also grateful for the technical
support of the Preclinical and Imaging and\r\nOptics Facilities support teams (ISTA).
In addition, we thank our funding sources for providing\r\nthe resources to do these
experiments: Horizon Europe ERC Starting Grant Number 101041551\r\n(M.S.; L.B.S.);
Special Research Program (SFB) of the Austrian Science Fund (FWF)\r\nNeuroStem Modulation
Project numbers F7814-B (S.A.G.; M.S.; G.S.; and L.B.S.) and F7805\r\n(G.C. and
S.H.). S.A.G is supported by a Boehringer Ingelheim Fonds PhD Fellowship, F.D.S.N.\r\nby
an Institute of Science and Technology Austria (ISTA) GROW fellowship, and G.C.
by an\r\nISTA Plus postdoctoral fellowship from the European Commission. S.H./L.B.S.
and G.C. were\r\nadditionally supported by institutional funds from the ISTA and
the University of Exeter,\r\nrespectively. "
article_processing_charge: No
author:
- first_name: Sophie A
full_name: Gobeil, Sophie A
id: 2f3e9efb-eb24-11ec-86b2-88efb11d59fa
last_name: Gobeil
- first_name: Francisco
full_name: Da Silveira Neto, Francisco
id: 8cfb7412-10a7-11f1-add1-82b44e6418f2
last_name: Da Silveira Neto
- first_name: Giulia
full_name: Silvestrelli, Giulia
id: 12632ae8-799e-11ef-94a2-e5a3b5ef49e9
last_name: Silvestrelli
- first_name: Matthijs Geert
full_name: Smits, Matthijs Geert
id: 7a231d52-e216-11ee-a0bb-8acd55f8f1f0
last_name: Smits
- first_name: Carmen
full_name: Streicher, Carmen
id: 36BCB99C-F248-11E8-B48F-1D18A9856A87
last_name: Streicher
- first_name: Giselle T
full_name: Cheung, Giselle T
id: 471195F6-F248-11E8-B48F-1D18A9856A87
last_name: Cheung
orcid: 0000-0001-8457-2572
- first_name: Simon
full_name: Hippenmeyer, Simon
id: 37B36620-F248-11E8-B48F-1D18A9856A87
last_name: Hippenmeyer
orcid: 0000-0003-2279-1061
- first_name: Lora Beatrice Jaeger
full_name: Sweeney, Lora Beatrice Jaeger
id: 56BE8254-C4F0-11E9-8E45-0B23E6697425
last_name: Sweeney
orcid: 0000-0001-9242-5601
citation:
ama: Gobeil SA, Da Silveira Neto F, Silvestrelli G, et al. Lineage origin of spinal
cord cell type diversity. bioRxiv. doi:10.64898/2026.02.12.705305
apa: Gobeil, S. A., Da Silveira Neto, F., Silvestrelli, G., Smits, M. G., Streicher,
C., Cheung, G. T., … Sweeney, L. B. (n.d.). Lineage origin of spinal cord cell
type diversity. bioRxiv. https://doi.org/10.64898/2026.02.12.705305
chicago: Gobeil, Sophie A, Francisco Da Silveira Neto, Giulia Silvestrelli, Matthijs
Geert Smits, Carmen Streicher, Giselle T Cheung, Simon Hippenmeyer, and Lora B.
Sweeney. “Lineage Origin of Spinal Cord Cell Type Diversity.” BioRxiv,
n.d. https://doi.org/10.64898/2026.02.12.705305.
ieee: S. A. Gobeil et al., “Lineage origin of spinal cord cell type diversity,”
bioRxiv. .
ista: Gobeil SA, Da Silveira Neto F, Silvestrelli G, Smits MG, Streicher C, Cheung
GT, Hippenmeyer S, Sweeney LB. Lineage origin of spinal cord cell type diversity.
bioRxiv, 10.64898/2026.02.12.705305.
mla: Gobeil, Sophie A., et al. “Lineage Origin of Spinal Cord Cell Type Diversity.”
BioRxiv, doi:10.64898/2026.02.12.705305.
short: S.A. Gobeil, F. Da Silveira Neto, G. Silvestrelli, M.G. Smits, C. Streicher,
G.T. Cheung, S. Hippenmeyer, L.B. Sweeney, BioRxiv (n.d.).
corr_author: '1'
date_created: 2026-02-17T11:36:20Z
date_published: 2026-02-16T00:00:00Z
date_updated: 2026-04-14T08:16:55Z
day: '16'
ddc:
- '570'
department:
- _id: SiHi
- _id: LoSw
doi: 10.64898/2026.02.12.705305
has_accepted_license: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/4.0/
main_file_link:
- open_access: '1'
url: https://doi.org/10.64898/2026.02.12.705305
month: '02'
oa: 1
oa_version: Preprint
project:
- _id: ebb66355-77a9-11ec-83b8-b8ac210a4dae
grant_number: '101041551'
name: Development and Evolution of Tetrapod Motor Circuits
- _id: 8da85f50-16d5-11f0-9cad-eab8b0ff6c9e
grant_number: F7814
name: 'Stem Cell Modulation in Neural Development and Regeneration/ P14-Swim-to-limb
transition: cell type to connection diversity'
- _id: 059F6AB4-7A3F-11EA-A408-12923DDC885E
grant_number: F7805
name: Stem Cell Modulation in Neural Development and Regeneration/ P05-Molecular
Mechanisms of Neural Stem Cell Lineage Progression
publication: bioRxiv
publication_status: submitted
status: public
title: Lineage origin of spinal cord cell type diversity
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2026'
...
---
OA_place: publisher
OA_type: hybrid
PlanS_conform: '1'
_id: '21449'
abstract:
- lang: eng
text: Three-dimensional (3D) crystals offer a route to scaling up trapped-ion systems
for quantum sensing and quantum simulation applications; however, engineering
coherent spin-motion couplings and effective spin-spin interactions in large crystals
poses technical challenges associated with decoherence and prolonged timescales
to generate appreciable entanglement. Here, we explore the possibility of speeding
up these interactions in 3D crystals via parametric amplification. For this purpose,
we derive a general Hamiltonian for the parametric amplification of spin-motion
coupling that is broadly applicable to normal modes with motion transverse to
or along the spatial extent of the crystal. Unlike in lower-dimensional crystals,
we find that the ability to faithfully (uniformly) amplify the spin-spin interactions
in 3D crystals depends on the physical implementation of the spin-motion coupling.
We consider the light-shift gate, and the so-called phase-insensitive and phase-sensitive
Mølmer-Sørensen (MS) gates, and we find that only the phase-sensitive MS gate
can be faithfully amplified in general 3D crystals. We discuss a situation where
nonuniform amplification can be advantageous. We also reconsider the effect of
counter-rotating terms on parametric amplification and find that they are not
as detrimental as previous studies suggest.
acknowledgement: We thank Wenchao Ge and Allison Carter for feedback on the manuscript.
We also thank Wenchao Ge for sharing the numerical simulation data that we have
used in Fig. 5 of this paper. N.N. would like to thank Perimeter Institute and Boston
University for support during this research. S.H. acknowledges partial support from
the Institute of Science and Technology Austria and the Austrian Science Fund (FWF)
DOI 10.55776/F71 for the duration of this project. This work was supported by DOE
Quantum Systems Accelerator, ARO W911NF24-1-0128, and NSF JILA-PFC PHY-2317149.
J.J.B. and A.M.R. acknowledge support through AFOSR Grant No. FA9550-25-1-0080.
A.S. acknowledges support by the Department of Science and Technology, Govt. of
India through the INSPIRE Faculty Award (DST/INSPIRE/04/2023/001486), by the Anusandhan
National Research Foundation (ANRF), Govt. of India through the Prime Minister’s
Early Career Research Grant (PMECRG) (ANRF/ECRG/2024/001160/PMS) and by IIT Madras
through the New Faculty Initiation Grant (NFIG).
article_number: '034004'
article_processing_charge: Yes (via OA deal)
article_type: original
arxiv: 1
author:
- first_name: Samarth
full_name: Hawaldar, Samarth
id: 221708e1-1ff6-11ee-9fa6-85146607433e
last_name: Hawaldar
orcid: 0000-0002-1965-4309
- first_name: N.
full_name: Nikhil, N.
last_name: Nikhil
- first_name: Ana Maria
full_name: Rey, Ana Maria
last_name: Rey
- first_name: John J.
full_name: Bollinger, John J.
last_name: Bollinger
- first_name: Athreya
full_name: Shankar, Athreya
last_name: Shankar
citation:
ama: Hawaldar S, Nikhil N, Rey AM, Bollinger JJ, Shankar A. Parametric amplification
of spin-motion coupling in three-dimensional trapped-ion crystals. Physical
Review Applied. 2026;25(3). doi:10.1103/h1m9-h3yw
apa: Hawaldar, S., Nikhil, N., Rey, A. M., Bollinger, J. J., & Shankar, A. (2026).
Parametric amplification of spin-motion coupling in three-dimensional trapped-ion
crystals. Physical Review Applied. American Physical Society. https://doi.org/10.1103/h1m9-h3yw
chicago: Hawaldar, Samarth, N. Nikhil, Ana Maria Rey, John J. Bollinger, and Athreya
Shankar. “Parametric Amplification of Spin-Motion Coupling in Three-Dimensional
Trapped-Ion Crystals.” Physical Review Applied. American Physical Society,
2026. https://doi.org/10.1103/h1m9-h3yw.
ieee: S. Hawaldar, N. Nikhil, A. M. Rey, J. J. Bollinger, and A. Shankar, “Parametric
amplification of spin-motion coupling in three-dimensional trapped-ion crystals,”
Physical Review Applied, vol. 25, no. 3. American Physical Society, 2026.
ista: Hawaldar S, Nikhil N, Rey AM, Bollinger JJ, Shankar A. 2026. Parametric amplification
of spin-motion coupling in three-dimensional trapped-ion crystals. Physical Review
Applied. 25(3), 034004.
mla: Hawaldar, Samarth, et al. “Parametric Amplification of Spin-Motion Coupling
in Three-Dimensional Trapped-Ion Crystals.” Physical Review Applied, vol.
25, no. 3, 034004, American Physical Society, 2026, doi:10.1103/h1m9-h3yw.
short: S. Hawaldar, N. Nikhil, A.M. Rey, J.J. Bollinger, A. Shankar, Physical Review
Applied 25 (2026).
corr_author: '1'
date_created: 2026-03-15T23:01:35Z
date_published: 2026-03-01T00:00:00Z
date_updated: 2026-04-14T09:04:08Z
day: '01'
ddc:
- '530'
department:
- _id: JoFi
- _id: GradSch
doi: 10.1103/h1m9-h3yw
external_id:
arxiv:
- '2507.16741'
file:
- access_level: open_access
checksum: f0dc6a50222b778fd75cc72a28d38689
content_type: application/pdf
creator: dernst
date_created: 2026-03-16T09:24:53Z
date_updated: 2026-03-16T09:24:53Z
file_id: '21456'
file_name: 2026_PhysicalReviewApplied_Hawaldar.pdf
file_size: 1421954
relation: main_file
success: 1
file_date_updated: 2026-03-16T09:24:53Z
has_accepted_license: '1'
intvolume: ' 25'
issue: '3'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: bdb108fd-d553-11ed-ba76-83dc74a9864f
grant_number: F07105
name: QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration
of Superconducting Quantum Circuits
publication: Physical Review Applied
publication_identifier:
eissn:
- 2331-7019
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Parametric amplification of spin-motion coupling in three-dimensional trapped-ion
crystals
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 25
year: '2026'
...
---
OA_place: repository
OA_type: green
_id: '21134'
abstract:
- lang: eng
text: "The Nakamoto consensus protocol underlying the Bitcoin blockchain uses proof
of work as a voting mechanism. Honest miners who contribute hashing power towards
securing the chain try to extend the longest chain they are aware of. Despite
its simplicity, Nakamoto consensus achieves meaningful security guarantees assuming
that at any point in time, a majority of the hashing power is controlled by honest
parties. This also holds under “resource variability”, i.e., if the total hashing
power varies greatly over time.\r\nProofs of space (PoSpace) have been suggested
as a more sustainable replacement for proofs of work. Unfortunately, no construction
of a “longest-chain” blockchain based on PoSpace, that is secure under dynamic
availability, is known. In this work, we prove that without additional assumptions
no such protocol exists. We exactly quantify this impossibility result by proving
a bound on the length of the fork required for double spending as a function of
the adversarial capabilities. This bound holds for any chain selection rule, and
we also show a chain selection rule (albeit a very strange one) that almost matches
this bound.\r\nThe Nakamoto consensus protocol underlying the Bitcoin blockchain
uses proof of work as a voting mechanism. Honest miners who contribute hashing
power towards securing the chain try to extend the longest chain they are aware
of. Despite its simplicity, Nakamoto consensus achieves meaningful security guarantees
assuming that at any point in time, a majority of the hashing power is controlled
by honest parties. This also holds under “resource variability”, i.e., if the
total hashing power varies greatly over time.\r\n\r\nProofs of space (PoSpace)
have been suggested as a more sustainable replacement for proofs of work. Unfortunately,
no construction of a “longest-chain” blockchain based on PoSpace, that is secure
under dynamic availability, is known. In this work, we prove that without additional
assumptions no such protocol exists. We exactly quantify this impossibility result
by proving a bound on the length of the fork required for double spending as a
function of the adversarial capabilities. This bound holds for any chain selection
rule, and we also show a chain selection rule (albeit a very strange one) that
almost matches this bound.\r\n\r\nConcretely, we consider a security game in which
the honest parties at any point control 0 > 1\r\n times more space than the adversary.
The adversary can change the honest space by a factor 1+- E with every block (dynamic
availability), and “replotting” the space (which allows answering two challenges
using the same space) takes as much time as p blocks.\r\nWe prove that no matter
what chain selection rule is used, in this game the adversary can create a fork
of length o^2 . p/E that will be picked as the winner by the chain selection rule.\r\nWe
also provide an upper bound that matches the lower bound up to a factor o. There
exists a chain selection rule (albeit a very strange one) which in the above game
requires forks of length at least o . p/E\r\nOur results show the necessity of
additional assumptions to create a secure PoSpace based longest-chain blockchain.
The Chia network in addition to PoSpace uses a verifiable delay function. Our
bounds show that an additional primitive like that is necessary."
acknowledgement: This research was funded in whole or in part by the Austrian Science
Fund (FWF) 10.55776/F85.
alternative_title:
- LNCS
article_processing_charge: No
arxiv: 1
author:
- first_name: Mirza Ahad
full_name: Baig, Mirza Ahad
id: 3EDE6DE4-AA5A-11E9-986D-341CE6697425
last_name: Baig
- first_name: Krzysztof Z
full_name: Pietrzak, Krzysztof Z
id: 3E04A7AA-F248-11E8-B48F-1D18A9856A87
last_name: Pietrzak
orcid: 0000-0002-9139-1654
citation:
ama: 'Baig MA, Pietrzak KZ. On the (in)security of Proofs-of-space based longest-chain
blockchains. In: 29th International Conference on Financial Cryptography and
Data Security. Vol 15752. Springer Nature; 2026:127-142. doi:10.1007/978-3-032-07035-7_8'
apa: 'Baig, M. A., & Pietrzak, K. Z. (2026). On the (in)security of Proofs-of-space
based longest-chain blockchains. In 29th International Conference on Financial
Cryptography and Data Security (Vol. 15752, pp. 127–142). Miyakojima, Japan:
Springer Nature. https://doi.org/10.1007/978-3-032-07035-7_8'
chicago: Baig, Mirza Ahad, and Krzysztof Z Pietrzak. “On the (in)Security of Proofs-of-Space
Based Longest-Chain Blockchains.” In 29th International Conference on Financial
Cryptography and Data Security, 15752:127–42. Springer Nature, 2026. https://doi.org/10.1007/978-3-032-07035-7_8.
ieee: M. A. Baig and K. Z. Pietrzak, “On the (in)security of Proofs-of-space based
longest-chain blockchains,” in 29th International Conference on Financial Cryptography
and Data Security, Miyakojima, Japan, 2026, vol. 15752, pp. 127–142.
ista: 'Baig MA, Pietrzak KZ. 2026. On the (in)security of Proofs-of-space based
longest-chain blockchains. 29th International Conference on Financial Cryptography
and Data Security. FC: Financial Cryptography and Data Security, LNCS, vol. 15752,
127–142.'
mla: Baig, Mirza Ahad, and Krzysztof Z. Pietrzak. “On the (in)Security of Proofs-of-Space
Based Longest-Chain Blockchains.” 29th International Conference on Financial
Cryptography and Data Security, vol. 15752, Springer Nature, 2026, pp. 127–42,
doi:10.1007/978-3-032-07035-7_8.
short: M.A. Baig, K.Z. Pietrzak, in:, 29th International Conference on Financial
Cryptography and Data Security, Springer Nature, 2026, pp. 127–142.
conference:
end_date: 2025-04-18
location: Miyakojima, Japan
name: 'FC: Financial Cryptography and Data Security'
start_date: 2025-04-14
corr_author: '1'
date_created: 2026-02-01T23:01:43Z
date_published: 2026-01-01T00:00:00Z
date_updated: 2026-04-15T08:45:18Z
day: '01'
department:
- _id: KrPi
doi: 10.1007/978-3-032-07035-7_8
external_id:
arxiv:
- '2505.14891'
intvolume: ' 15752'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2505.14891
month: '01'
oa: 1
oa_version: Preprint
page: 127-142
project:
- _id: 34a34d57-11ca-11ed-8bc3-a2688a8724e1
grant_number: F8509
name: Security and Privacy by Design for Complex Systems
publication: 29th International Conference on Financial Cryptography and Data Security
publication_identifier:
eissn:
- 1611-3349
isbn:
- '9783032070340'
issn:
- 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
record:
- id: '21651'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: On the (in)security of Proofs-of-space based longest-chain blockchains
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 15752
year: '2026'
...
---
OA_place: publisher
_id: '21651'
abstract:
- lang: eng
text: "Blockchains enable distributed consensus in permissionless settings, where
participants\r\nare unknown, dynamically changing, and do not trust each other.
While Bitcoin,\r\nbased on Proof-of-Work (PoW), was the first protocol in this
model, significant\r\nresearch has focused on permissionless protocols using alternative
physical resources,\r\nspecifically Proof-of-Space (PoSpace) and Verifiable Delay
Functions (VDFs). This\r\nthesis investigates the theoretical limits and design
space of longest-chain protocols in\r\nthe fully permissionless and dynamically
available settings using these three resources.\r\nFirst, we address the feasibility
of blockchains relying solely on storage as a resource.\r\nWe prove a fundamental
impossibility result: there exists no secure longest-chain\r\nprotocol based exclusively
on Proof-of-Space in the fully permissionless or dynamically\r\navailable settings.
Further, we quantify the adversarial capabilities required to execute\r\na double-spend
attack. Our result formally justifies the necessity of coupling PoSpace\r\nwith
time-dependent primitives (such as VDFs) or to move to less permissive settings\r\n(quasi-permissionless
or permissioned) to ensure security.\r\nSecond, we generalize Nakamoto-like heaviest
chain consensus to protocols utilizing\r\ncombinations of multiple physical resources.
We analyze chain selection rules governed\r\nby a weight function Γ(S, V,W), which
assigns weight to blocks based on recorded\r\nSpace (S), VDF speed (V ), and Work
(W). We provide a complete classification\r\nof secure weight functions, proving
that a weight function is secure against private\r\ndouble-spend attacks if and
only if it is homogeneous in the timed resources (V,W)\r\nand sub-homogeneous
in S. This framework unifies existing protocols like Bitcoin and\r\nChia under
a single theoretical model and provides a powerful tool for designing new\r\nlongest-chain
blockchains from a mix of physical resources."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Mirza Ahad
full_name: Baig, Mirza Ahad
id: 3EDE6DE4-AA5A-11E9-986D-341CE6697425
last_name: Baig
citation:
ama: Baig MA. On secure chain selection rules from physical resources in a permissionless
setting. 2026. doi:10.15479/AT-ISTA-21651
apa: Baig, M. A. (2026). On secure chain selection rules from physical resources
in a permissionless setting. Institute of Science and Technology Austria.
https://doi.org/10.15479/AT-ISTA-21651
chicago: Baig, Mirza Ahad. “On Secure Chain Selection Rules from Physical Resources
in a Permissionless Setting.” Institute of Science and Technology Austria, 2026.
https://doi.org/10.15479/AT-ISTA-21651.
ieee: M. A. Baig, “On secure chain selection rules from physical resources in a
permissionless setting,” Institute of Science and Technology Austria, 2026.
ista: Baig MA. 2026. On secure chain selection rules from physical resources in
a permissionless setting. Institute of Science and Technology Austria.
mla: Baig, Mirza Ahad. On Secure Chain Selection Rules from Physical Resources
in a Permissionless Setting. Institute of Science and Technology Austria,
2026, doi:10.15479/AT-ISTA-21651.
short: M.A. Baig, On Secure Chain Selection Rules from Physical Resources in a Permissionless
Setting, Institute of Science and Technology Austria, 2026.
corr_author: '1'
date_created: 2026-04-02T09:31:34Z
date_published: 2026-03-04T00:00:00Z
date_updated: 2026-04-15T08:45:19Z
day: '04'
ddc:
- '000'
degree_awarded: PhD
department:
- _id: GradSch
- _id: KrPi
doi: 10.15479/AT-ISTA-21651
file:
- access_level: closed
checksum: c3986dba90653dac97adba662ebff238
content_type: application/x-zip-compressed
creator: mbaig
date_created: 2026-04-03T17:28:48Z
date_updated: 2026-04-13T08:24:13Z
file_id: '21655'
file_name: PhD-Thesis-Mirza-Ahad-Baig - Library Submission.zip
file_size: 139353434
relation: source_file
- access_level: open_access
checksum: 292a5989262521f7c145a109d1f348cb
content_type: application/pdf
creator: mbaig
date_created: 2026-04-03T17:29:30Z
date_updated: 2026-04-15T07:37:25Z
file_id: '21656'
file_name: 2026_Baig_Mirza_Ahad_Thesis.pdf
file_size: 1942037
relation: main_file
file_date_updated: 2026-04-15T07:37:25Z
has_accepted_license: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-sa/4.0/
month: '03'
oa: 1
oa_version: Published Version
publication_identifier:
isbn:
- 978-3-99078-078-7
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '21134'
relation: part_of_dissertation
status: public
- id: '20587'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Krzysztof Z
full_name: Pietrzak, Krzysztof Z
id: 3E04A7AA-F248-11E8-B48F-1D18A9856A87
last_name: Pietrzak
orcid: 0000-0002-9139-1654
title: On secure chain selection rules from physical resources in a permissionless
setting
tmp:
image: /images/cc_by_nc_sa.png
legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC
BY-NC-SA 4.0)
short: CC BY-NC-SA (4.0)
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2026'
...
---
OA_place: publisher
OA_type: gold
_id: '21436'
abstract:
- lang: eng
text: 'The cobalt-intercalated transition metal dichalcogenide CoxTaS2 hosts a rich
landscape of magnetic phases that depend sensitively on x. While the stoichiometric
compound with x = 1/3 exhibits a single magnetic transition, samples with x≤0.325
display two transitions with an anomalous Hall effect (AHE) emerging in the lower
temperature phase. Here, we resolve the spin structure in each phase by employing
a suite of magneto-optical probes that include the discovery of anomalous magneto-birefringence:
a spontaneous time-reversal sensitive rotation of the principal optic axes. A
symmetry-based analysis identifies the AHE-active phase as an anisotropic (2+1)Q
state, in which magnetic modulation at one wavevector (Q) differs in symmetry
from that at the remaining two. The (2+1)Q state naturally exhibits scalar spin
chirality as a mechanism for the AHE and expands the classification of multi-Q
magnetic phases.'
acknowledgement: 'We thank Linda Ye and Yue Sun for helpful discussion. Experimental
and theoretical work at LBNL and UC Berkeley was funded by the Quantum Materials
(KC2202) program under the U.S. Department of Energy, Office of Science, Office
of Basic Energy Sciences, Materials Sciences and Engineering Division under Contract
No. DE-AC02-05CH11231. V.S. and J.O. received support from the Gordon and Betty
Moore Foundation’s EPiQS Initiative through Grant GBMF4537 to J.O. at UC Berkeley.
J.K. received support from the National Science Foundation Graduate Research Fellowship
Program under Grant No. 2146752. Any opinions, findings, and conclusions or recommendations
expressed in this material are those of the author(s) and do not necessarily reflect
the views of the National Science Foundation. During the preparation of this manuscript,
we became aware of the following related work: refs. 56,57,58.'
article_number: '2507.12588'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Jonathon
full_name: Kruppe, Jonathon
last_name: Kruppe
- first_name: Josue
full_name: Rodriguez, Josue
last_name: Rodriguez
- first_name: Catherine
full_name: Xu, Catherine
last_name: Xu
- first_name: James
full_name: Analytis, James
last_name: Analytis
- first_name: Joseph
full_name: Orenstein, Joseph
last_name: Orenstein
- first_name: Veronika
full_name: Sunko, Veronika
id: 23cb1cf6-2c7a-11ef-91a4-f72fc19f20b3
last_name: Sunko
orcid: 0000-0003-2724-3523
citation:
ama: Kruppe J, Rodriguez J, Xu C, Analytis J, Orenstein J, Sunko V. Anisotropic
multi-Q order in CoxTaS2. npj Quantum Materials. 2026. doi:10.1038/s41535-026-00856-w
apa: Kruppe, J., Rodriguez, J., Xu, C., Analytis, J., Orenstein, J., & Sunko,
V. (2026). Anisotropic multi-Q order in CoxTaS2. Npj Quantum Materials.
Springer Nature. https://doi.org/10.1038/s41535-026-00856-w
chicago: Kruppe, Jonathon, Josue Rodriguez, Catherine Xu, James Analytis, Joseph
Orenstein, and Veronika Sunko. “Anisotropic Multi-Q Order in CoxTaS2.” Npj
Quantum Materials. Springer Nature, 2026. https://doi.org/10.1038/s41535-026-00856-w.
ieee: J. Kruppe, J. Rodriguez, C. Xu, J. Analytis, J. Orenstein, and V. Sunko, “Anisotropic
multi-Q order in CoxTaS2,” npj Quantum Materials. Springer Nature, 2026.
ista: Kruppe J, Rodriguez J, Xu C, Analytis J, Orenstein J, Sunko V. 2026. Anisotropic
multi-Q order in CoxTaS2. npj Quantum Materials., 2507.12588.
mla: Kruppe, Jonathon, et al. “Anisotropic Multi-Q Order in CoxTaS2.” Npj Quantum
Materials, 2507.12588, Springer Nature, 2026, doi:10.1038/s41535-026-00856-w.
short: J. Kruppe, J. Rodriguez, C. Xu, J. Analytis, J. Orenstein, V. Sunko, Npj
Quantum Materials (2026).
corr_author: '1'
date_created: 2026-03-11T10:39:55Z
date_published: 2026-04-09T00:00:00Z
date_updated: 2026-04-15T13:03:14Z
day: '09'
department:
- _id: VeSu
doi: 10.1038/s41535-026-00856-w
external_id:
arxiv:
- '2507.12588'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1038/s41535-026-00856-w
month: '04'
oa: 1
oa_version: Published Version
publication: npj Quantum Materials
publication_identifier:
eissn:
- 2397-4648
publication_status: epub_ahead
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Anisotropic multi-Q order in CoxTaS2
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2026'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '21714'
abstract:
- lang: eng
text: Be stars are rapidly rotating main-sequence stars that play a crucial role
in understanding stellar evolution and binary interactions. In this Letter, we
propose a new formation scenario for black hole (BH) + Be star binaries (hereafter
BHBe binaries), where the Be star is produced through the wind Roche lobe overflow
(WRLOF) mechanism. Our analysis is based on numerical simulations of the WRLOF
process in massive binaries, building on recent theoretical work. We demonstrate
that the WRLOF model can efficiently form BHBe binaries under reasonable assumptions
on stellar wind velocities. Using rapid binary population synthesis, we estimate
the population of such systems in the Milky Way, predicting ∼1800−3200 currently
existing BHBe binaries originating from the WRLOF channel. These systems are characterized
by high eccentricities and exceptionally wide orbits, with typical orbital periods
exceeding 1000 days and a peak distribution around ∼10,000 days. Due to their
long orbital separations, these BHBe binaries are promising targets for future
detection via astrometric and interferometric observations.
acknowledgement: We are deeply grateful to the anonymous referee for the insightful
comments, which have significantly improved the quality of this work. The authors
express their gratitude to Zhaoyu Zuo and I. El Mellah for sharing the grids of
wind accretion efficiencies. Z.L. thanks Matthias U. Kruckow for detailed discussions
about the BH formation. This work is supported by the Natural Science Foundation
of China (grant Nos. 12125303, 12525304, 12288102, 12090040/3, 12473034, 12503044,
12333008, 12433009, 12422305, 12273105, 12073070, 12173081), the Strategic Priority
Research Program of the Chinese Academy of Sciences (grant Nos. XDB1160303, XDB1160201,
XDB1160000), the National Key R&D Program of China (grant Nos. 2021YFA1600403 and
2021YFA1600400), the CAS “Light of West China,” the Yunnan Revitalization Talent
Support Program-Science & Technology Champion Project (No. 202305AB350003) and Young
Talent project, the International Centre of Supernovae (ICESUN), Yunnan Key Laboratory
of Supernova Research (Nos. 202302AN360001 and 202201BC070003), Yunnan Fundamental
Research Projects (No. 202401AT070139), and the Natural Science Foundation of Henan
Province (No. 242300420944). X.C. acknowledges the New Cornerstone Science Foundation
through the XPLORER PRIZE. The authors gratefully acknowledge the “PHOENIX Supercomputing
Platform” jointly operated by the Binary Population Synthesis Group and the Stellar
Astrophysics Group at Yunnan Observatories, Chinese Academy of Sciences.
article_number: L42
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Zhenwei
full_name: Li, Zhenwei
last_name: Li
- first_name: Shi
full_name: Jia, Shi
last_name: Jia
- first_name: Dandan
full_name: Wei, Dandan
id: 5dd129bd-0601-11ef-b325-833284687b76
last_name: Wei
- first_name: Hongwei
full_name: Ge, Hongwei
last_name: Ge
- first_name: Hailiang
full_name: Chen, Hailiang
last_name: Chen
- first_name: Yangyang
full_name: Zhang, Yangyang
last_name: Zhang
- first_name: Xuefei
full_name: Chen, Xuefei
last_name: Chen
- first_name: Zhanwen
full_name: Han, Zhanwen
last_name: Han
citation:
ama: 'Li Z, Jia S, Wei D, et al. Formation of Be stars via wind accretion: Case
study on Black Hole + Be star binaries. The Astrophysical Journal Letters.
2026;996(2). doi:10.3847/2041-8213/ae3008'
apa: 'Li, Z., Jia, S., Wei, D., Ge, H., Chen, H., Zhang, Y., … Han, Z. (2026). Formation
of Be stars via wind accretion: Case study on Black Hole + Be star binaries. The
Astrophysical Journal Letters. IOP Publishing. https://doi.org/10.3847/2041-8213/ae3008'
chicago: 'Li, Zhenwei, Shi Jia, Dandan Wei, Hongwei Ge, Hailiang Chen, Yangyang
Zhang, Xuefei Chen, and Zhanwen Han. “Formation of Be Stars via Wind Accretion:
Case Study on Black Hole + Be Star Binaries.” The Astrophysical Journal Letters.
IOP Publishing, 2026. https://doi.org/10.3847/2041-8213/ae3008.'
ieee: 'Z. Li et al., “Formation of Be stars via wind accretion: Case study
on Black Hole + Be star binaries,” The Astrophysical Journal Letters, vol.
996, no. 2. IOP Publishing, 2026.'
ista: 'Li Z, Jia S, Wei D, Ge H, Chen H, Zhang Y, Chen X, Han Z. 2026. Formation
of Be stars via wind accretion: Case study on Black Hole + Be star binaries. The
Astrophysical Journal Letters. 996(2), L42.'
mla: 'Li, Zhenwei, et al. “Formation of Be Stars via Wind Accretion: Case Study
on Black Hole + Be Star Binaries.” The Astrophysical Journal Letters, vol.
996, no. 2, L42, IOP Publishing, 2026, doi:10.3847/2041-8213/ae3008.'
short: Z. Li, S. Jia, D. Wei, H. Ge, H. Chen, Y. Zhang, X. Chen, Z. Han, The Astrophysical
Journal Letters 996 (2026).
date_created: 2026-04-12T22:01:50Z
date_published: 2026-01-10T00:00:00Z
date_updated: 2026-04-16T06:26:18Z
day: '10'
ddc:
- '520'
department:
- _id: YlGo
doi: 10.3847/2041-8213/ae3008
external_id:
arxiv:
- '2512.18565'
file:
- access_level: open_access
checksum: 09200c1cf405101abdd298ce80c9a90d
content_type: application/pdf
creator: dernst
date_created: 2026-04-16T06:24:30Z
date_updated: 2026-04-16T06:24:30Z
file_id: '21741'
file_name: 2026_AstrophysicalJourLetters_Li.pdf
file_size: 5202345
relation: main_file
success: 1
file_date_updated: 2026-04-16T06:24:30Z
has_accepted_license: '1'
intvolume: ' 996'
issue: '2'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
publication: The Astrophysical Journal Letters
publication_identifier:
eissn:
- 2041-8213
issn:
- 2041-8205
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Formation of Be stars via wind accretion: Case study on Black Hole + Be star
binaries'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 996
year: '2026'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: diamond
_id: '21718'
abstract:
- lang: eng
text: "In this paper, we consider the big algebra recently introduced by Hausel
for the GLn-action on the coordinate ring of the matrix space Mat(n,r). In particular,
we obtain explicit formulas for the big algebra generators in terms of differential
operators with polynomial coefficients. We show that big algebras in type A are
commutative and relate them to the Bethe subalgebra in the Yangian Y(gln). We
apply these results to big algebras of symmetric powers of the standard representation
of GLn.\r\n."
acknowledgement: "I would like to express my gratitude to Tam´as Hausel for introducing
me to the subject and\r\nfor his constant guidance throughout this work. I would
also like to thank Tam´as Hausel,\r\nMischa Elkner, Jakub L¨owit, Anton Mellit,
Marino Romero, Leonid Rybnikov for many fruitful\r\ndiscussions and feedback on
earlier drafts of this paper. We are grateful to the anonymous\r\nreferees for many
useful comments and suggestions that improved the manuscript. This work was done
during the author’s PhD studies at the Institute of Science and Technology Austria
(ISTA). The author was supported by the Austrian Science Fund (FWF) grant\r\n“Geometry
of the tip of the global nilpotent cone” no. 10.55776/P35847 and the DOC Fellowship
of the Austrian Academy of Sciences. The author also acknowledges the long-term
program\r\nof support of the Ukrainian research teams at the Polish Academy of Sciences
carried out in\r\ncollaboration with the U.S. National Academy of Sciences with
the financial support of external\r\npartners. For open access purposes, the author
has applied a CC BY public copyright license\r\nto any author-accepted manuscript
version arising from this submission."
article_number: '024'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Nhok T
full_name: Ngo, Nhok T
id: 28e53c8c-896a-11ed-bdf8-f809043ce2f0
last_name: Ngo
citation:
ama: 'Ngo NT. Big algebra in type A for the coordinate ring of the matrix space.
Symmetry, Integrability and Geometry: Methods and Applications. 2026;22.
doi:10.3842/SIGMA.2026.024'
apa: 'Ngo, N. T. (2026). Big algebra in type A for the coordinate ring of the matrix
space. Symmetry, Integrability and Geometry: Methods and Applications.
National Academy of Science of Ukraine. https://doi.org/10.3842/SIGMA.2026.024'
chicago: 'Ngo, Nhok T. “Big Algebra in Type A for the Coordinate Ring of the Matrix
Space.” Symmetry, Integrability and Geometry: Methods and Applications.
National Academy of Science of Ukraine, 2026. https://doi.org/10.3842/SIGMA.2026.024.'
ieee: 'N. T. Ngo, “Big algebra in type A for the coordinate ring of the matrix space,”
Symmetry, Integrability and Geometry: Methods and Applications, vol. 22.
National Academy of Science of Ukraine, 2026.'
ista: 'Ngo NT. 2026. Big algebra in type A for the coordinate ring of the matrix
space. Symmetry, Integrability and Geometry: Methods and Applications. 22, 024.'
mla: 'Ngo, Nhok T. “Big Algebra in Type A for the Coordinate Ring of the Matrix
Space.” Symmetry, Integrability and Geometry: Methods and Applications,
vol. 22, 024, National Academy of Science of Ukraine, 2026, doi:10.3842/SIGMA.2026.024.'
short: 'N.T. Ngo, Symmetry, Integrability and Geometry: Methods and Applications
22 (2026).'
corr_author: '1'
date_created: 2026-04-12T22:01:51Z
date_published: 2026-03-14T00:00:00Z
date_updated: 2026-04-16T06:11:12Z
day: '14'
ddc:
- '510'
department:
- _id: TaHa
doi: 10.3842/SIGMA.2026.024
external_id:
arxiv:
- '2501.04605'
file:
- access_level: open_access
checksum: 29b28b5f8717ed1a084a2b551d0fd284
content_type: application/pdf
creator: dernst
date_created: 2026-04-16T06:06:54Z
date_updated: 2026-04-16T06:06:54Z
file_id: '21740'
file_name: 2026_SIGMA_Ngo.pdf
file_size: 975460
relation: main_file
success: 1
file_date_updated: 2026-04-16T06:06:54Z
has_accepted_license: '1'
intvolume: ' 22'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 34b2c9cb-11ca-11ed-8bc3-a50ba74ca4a3
grant_number: P35847
name: Geometry of the tip of the global nilpotent cone
- _id: e6c64f42-ab3c-11f0-94c7-a95658059ccc
grant_number: '27483'
name: Big algebras in classical types
publication: 'Symmetry, Integrability and Geometry: Methods and Applications'
publication_identifier:
eissn:
- 1815-0659
publication_status: published
publisher: National Academy of Science of Ukraine
quality_controlled: '1'
scopus_import: '1'
status: public
title: Big algebra in type A for the coordinate ring of the matrix space
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 22
year: '2026'
...
---
OA_place: publisher
OA_type: hybrid
PlanS_conform: '1'
_id: '21721'
abstract:
- lang: eng
text: 'Swimming bacteria move through a fluid by actuating their moving body parts.
They are force-free and can be described as hydrodynamic force dipoles: pushers
or pullers. This modelling description is broadly used in biological physics and
active matter research, and it has successfully predicted, for example, the superfluid
behaviour of suspensions of pushers or the bend instability and emergence of turbulent
flows in active nematics. However, this description accounts only for the translational
motion of the swimming body and neglects the effects of hydrodynamic torque dipoles,
which are relevant to bacteria with rotary motor-driven flagella, such as swimming
Escherichia coli. Here we show that the torque dipole of confined swimming E.
coli can power the persistent rotation of symmetric discs. The torque dipole leads
to a traction force on the discs, an additive mechanism that is both contactless
and independent of the orientation of the bacteria. Our results indicate that
the torque dipole of swimming E. coli is notable in confined geometries, which
is relevant to bacterial transport through porous materials, biofilms and the
development of chiral fluids.'
acknowledged_ssus:
- _id: NanoFab
- _id: EM-Fac
acknowledgement: We thank E. Krasnopeeva for help with the bacterial culture, motility
and genetic engineering. We thank Q. Martinet for help with the experimental design,
F. Pertl for atomic force microscopy measurements and S. Hajek for the scanning
electron microscopy imaging. This project has received funding from the European
Research Council under the European Union’s Horizon Europe research and innovation
programme (VULCAN, 101086998). The views and opinions expressed are, however, those
of the authors only and do not necessarily reflect those of the European Union or
the European Research Council Executive Agency. Neither the European Union nor the
granting authority can be held responsible for them. J.P. thanks the Nanofabrication
and Electron Microscopy Shared Scientific Units of ISTA for support. Open access
funding provided by Institute of Science and Technology (IST Austria).
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Daniel B
full_name: Grober, Daniel B
id: c692f879-718d-11ee-81f0-da7caa79c783
last_name: Grober
- first_name: Tanumoy
full_name: Dhar, Tanumoy
last_name: Dhar
- first_name: David
full_name: Saintillan, David
last_name: Saintillan
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
citation:
ama: Grober DB, Dhar T, Saintillan D, Palacci JA. The hydrodynamic torque dipole
from rotary bacterial flagella powers symmetric discs. Nature Physics.
2026. doi:10.1038/s41567-026-03189-4
apa: Grober, D. B., Dhar, T., Saintillan, D., & Palacci, J. A. (2026). The hydrodynamic
torque dipole from rotary bacterial flagella powers symmetric discs. Nature
Physics. Springer Nature. https://doi.org/10.1038/s41567-026-03189-4
chicago: Grober, Daniel B, Tanumoy Dhar, David Saintillan, and Jérémie A Palacci.
“The Hydrodynamic Torque Dipole from Rotary Bacterial Flagella Powers Symmetric
Discs.” Nature Physics. Springer Nature, 2026. https://doi.org/10.1038/s41567-026-03189-4.
ieee: D. B. Grober, T. Dhar, D. Saintillan, and J. A. Palacci, “The hydrodynamic
torque dipole from rotary bacterial flagella powers symmetric discs,” Nature
Physics. Springer Nature, 2026.
ista: Grober DB, Dhar T, Saintillan D, Palacci JA. 2026. The hydrodynamic torque
dipole from rotary bacterial flagella powers symmetric discs. Nature Physics.
mla: Grober, Daniel B., et al. “The Hydrodynamic Torque Dipole from Rotary Bacterial
Flagella Powers Symmetric Discs.” Nature Physics, Springer Nature, 2026,
doi:10.1038/s41567-026-03189-4.
short: D.B. Grober, T. Dhar, D. Saintillan, J.A. Palacci, Nature Physics (2026).
corr_author: '1'
date_created: 2026-04-12T22:01:51Z
date_published: 2026-03-27T00:00:00Z
date_updated: 2026-04-16T06:20:23Z
day: '27'
ddc:
- '570'
department:
- _id: JePa
doi: 10.1038/s41567-026-03189-4
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1038/s41567-026-03189-4
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: bdac72da-d553-11ed-ba76-eae56e802b74
grant_number: '101086998'
name: 'VULCAN: matter, powered from within'
publication: Nature Physics
publication_identifier:
eissn:
- 1745-2481
issn:
- 1745-2473
publication_status: epub_ahead
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: The hydrodynamic torque dipole from rotary bacterial flagella powers symmetric
discs
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2026'
...
---
OA_type: closed access
_id: '21730'
abstract:
- lang: eng
text: Hydrogen peroxide (H2O2) is a crucial member of the reactive oxygen species
(ROS) family, playing roles in cellular signalling and immune responses in human
health. Moreover, it is a potential biomarker of diabetes when present in aberrant
concentrations. Therefore, monitoring trace levels of H2O2 has become a research
hotspot for analytical and sensor chemists. In this context, we report a rhodamine-based
fluorescent probe (RN), which shows excellent fluorescent enhancement at 555 nm
upon the addition of H2O2 along with a low limit of detection (LOD) of 0.67 ppm
and fast response (∼2 min). The probe is highly selective for H2O2, showing no
fluorescence enhancement with other ROS. RN is synthesised in a one-pot chemical
reaction using rhodamine 6G (R6G) and 4,7,10-trioxa-1,13-tridecanediamine (TTDA).
H2O2 detection in pre-treated milk samples proves its real-world viability. We
found that RN shows low cytotoxicity, which allowed us to successfully explore
its potential to monitor H2O2 generation in a diabetic L929 skin cell line and
diabetic mice liver tissue. This result demonstrates promising features for assessing
early diabetic progression through fluorescence imaging.
acknowledged_ssus:
- _id: LifeSc
acknowledgement: "MM acknowledges the Government of India for DST-INSPIRE\r\nfellowship
[IF200389] and Federal Ministry of Education, Science and Research (BMBWF) and the
OeAD – Austria’s Agency for Education and Internationalisation for an Ernst Mach
Grant, weltweit (grant number MPC-2024-01518) for research internship at ISTA. The
Scientific Service Units of ISTA supported this research through resources provided
by the Lab Support Facility. PG acknowledges the ANRF, India, for his NPDF fellowship
(File no. PDF/2022/001960). PB acknowledges ANRF, India, for the SERB-CRG sponsored
project GAP-240712 (vide reference no. CRG/2022/001679)."
article_processing_charge: No
article_type: original
author:
- first_name: Moumita
full_name: Mondal, Moumita
last_name: Mondal
- first_name: Pravat
full_name: Ghorai, Pravat
last_name: Ghorai
- first_name: Asmita
full_name: Samadder, Asmita
last_name: Samadder
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: Priyabrata
full_name: Banerjee, Priyabrata
last_name: Banerjee
citation:
ama: Mondal M, Ghorai P, Samadder A, Freunberger SA, Banerjee P. H2O2 responsive
rhodamine-based probe for monitoring early-stage diabetes diagnosis. Journal
of Materials Chemistry B. 2026. doi:10.1039/d5tb02687c
apa: Mondal, M., Ghorai, P., Samadder, A., Freunberger, S. A., & Banerjee, P.
(2026). H2O2 responsive rhodamine-based probe for monitoring early-stage diabetes
diagnosis. Journal of Materials Chemistry B. Royal Society of Chemistry.
https://doi.org/10.1039/d5tb02687c
chicago: Mondal, Moumita, Pravat Ghorai, Asmita Samadder, Stefan Alexander Freunberger,
and Priyabrata Banerjee. “H2O2 Responsive Rhodamine-Based Probe for Monitoring
Early-Stage Diabetes Diagnosis.” Journal of Materials Chemistry B. Royal
Society of Chemistry, 2026. https://doi.org/10.1039/d5tb02687c.
ieee: M. Mondal, P. Ghorai, A. Samadder, S. A. Freunberger, and P. Banerjee, “H2O2
responsive rhodamine-based probe for monitoring early-stage diabetes diagnosis,”
Journal of Materials Chemistry B. Royal Society of Chemistry, 2026.
ista: Mondal M, Ghorai P, Samadder A, Freunberger SA, Banerjee P. 2026. H2O2 responsive
rhodamine-based probe for monitoring early-stage diabetes diagnosis. Journal of
Materials Chemistry B.
mla: Mondal, Moumita, et al. “H2O2 Responsive Rhodamine-Based Probe for Monitoring
Early-Stage Diabetes Diagnosis.” Journal of Materials Chemistry B, Royal
Society of Chemistry, 2026, doi:10.1039/d5tb02687c.
short: M. Mondal, P. Ghorai, A. Samadder, S.A. Freunberger, P. Banerjee, Journal
of Materials Chemistry B (2026).
corr_author: '1'
date_created: 2026-04-13T07:45:26Z
date_published: 2026-04-10T00:00:00Z
date_updated: 2026-04-16T05:44:49Z
day: '10'
department:
- _id: StFr
doi: 10.1039/d5tb02687c
external_id:
pmid:
- '41958432'
language:
- iso: eng
month: '04'
oa_version: None
pmid: 1
publication: Journal of Materials Chemistry B
publication_identifier:
eissn:
- 2050-7518
issn:
- 2050-750X
publication_status: epub_ahead
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: H2O2 responsive rhodamine-based probe for monitoring early-stage diabetes diagnosis
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2026'
...
---
OA_place: publisher
_id: '20991'
abstract:
- lang: eng
text: "Rapid local adaptation to new environments is critical for species persistence,
especially in introduced populations. The evolutionary success of these populations
is fundamentally dictated by the organization of genetic variation—the genomic
architecture—in the face of severe demographic constraints, such as the founder
effects and genetic bottlenecks that frequently accompany colonization. A central
question in evolutionary biology is whether rapid adaptation relies on major-effect
loci, such as chromosomal inversions, or on many small-effect loci dispersed across
the genome. Furthermore, the genomic architecture strongly influences the extent
to which evolutionary outcomes are predictable. Using introduced populations of
the marine snail, Littorina saxatilis, as a model, this thesis investigates how
genetic variation and genomic structure drive adaptation following introduction.
We employed a population genomics approach on experimentally and accidentally
introduced populations to dissect the specific genomic features that underpin
divergence in newly colonized environments.\r\n\r\nIn Chapter 2, we tested the
predictability of local adaptation through an uncommon 30-year transplant experiment
in nature. By distinguishing allele and chromosomal inversion frequency changes
from neutral expectations, we found that evolutionary change was highly predictable
at the macro-scale (phenotypes and chromosomal inversions), but less robust at
the level of individual collinear loci. This result demonstrates that evolution
can be predictable when a population possesses sufficient standing genetic variation
(SGV), with chromosomal inversions acting as key integrated units that facilitate
a rapid response to selection. Building on this, Chapter 3 applied whole-genome
sequencing to three accidentally introduced populations (Venice, San Francisco,
and Redwood City) to investigate their likely source and genomic patterns of divergence.
We identified genomic regions of remarkable divergence potentially associated
with local adaptation, and likely fuelled by SGV, while explicitly acknowledging
the difficulty in disentangling selection signals from the genome-wide effects
of demographic processes. Furthermore, we found that the divergence patterns relied
extensively on the collinear genome in these introduced populations, and less
clearly on the chromosomal inversions. This observation contrasts with local adaptation
observed in the experimental system that relied on both collinear loci and highly
selected chromosomal inversions, highlighting how demographic history and genomic
architecture influence the detectable signature of local adaptation.\r\n\r\nA
major limitation to conducting large-scale comparative evolutionary studies is
the lack of data standardization, which prevents the integration of community
knowledge and high-resolution environmental and genetic data. Chapter 4 addresses
this by developing a community database for the Littorina system. This platform
implements standardized protocols for the integration of diverse phenotypic and
environmental data from multiple Littorina species. Likewise, the platform also
centralizes the availability of associated genomic data through links to external
repositories. This database represents a crucial tool to test complex, large-scale
evolutionary hypotheses.\r\n\r\nCollectively, this thesis strongly reinforces
the fundamental importance of SGV as the raw material for successful local adaptation,
a conclusion supported by evidence in both experimental and accidental introductions.
Furthermore, this work highlights the critical role of the genomic architecture—specifically
chromosomal inversions—in driving the predictability and effectiveness of adaptive
responses. Our findings underscore how the interplay between SGV and genomic architecture
dictates the trajectory and detectability of evolution in colonizing populations,
while simultaneously providing a necessary tool to advance comparative evolutionary
genomics in emerging model organisms."
acknowledgement: "I acknowledge the funding agencies 1Norwegian Research Council RCN
project 315287.\r\n2The FIASCO project \"Illuminating range shifts through evolutionary
FIASCO: contrasting\r\nFaIling And Successful ColOnizations in replicated wild populations\",
funded by the\r\nEuropean Union - Next Generation EU (Piano Nazionale di Ripresa
e Resilienza - MUR\r\ncode: P202229JBC, CUP: C53D23007100001). 3Ecotypic formation
in Littorina saxatilis\r\nin the Western Atlantic and comparisons across the North
Atlantic. University of\r\nGothenburg Research Travel Grant, Tjarno Marine Laboratory,
Sweden. $3023 (2018).\r\n4JIN project (Young Researchers, Spanish Ministry of Science,
RTI2018-101274-J-I00)"
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Diego Fernando
full_name: Garcia Castillo, Diego Fernando
id: ae681a14-dc74-11ea-a0a7-c6ef18161701
last_name: Garcia Castillo
citation:
ama: Garcia Castillo DF. The genomic architecture of local adaptation in introduced
populations. 2026. doi:10.15479/AT-ISTA-20991
apa: Garcia Castillo, D. F. (2026). The genomic architecture of local adaptation
in introduced populations. Institute of Science and Technology Austria. https://doi.org/10.15479/AT-ISTA-20991
chicago: Garcia Castillo, Diego Fernando. “The Genomic Architecture of Local Adaptation
in Introduced Populations.” Institute of Science and Technology Austria, 2026.
https://doi.org/10.15479/AT-ISTA-20991.
ieee: D. F. Garcia Castillo, “The genomic architecture of local adaptation in introduced
populations,” Institute of Science and Technology Austria, 2026.
ista: Garcia Castillo DF. 2026. The genomic architecture of local adaptation in
introduced populations. Institute of Science and Technology Austria.
mla: Garcia Castillo, Diego Fernando. The Genomic Architecture of Local Adaptation
in Introduced Populations. Institute of Science and Technology Austria, 2026,
doi:10.15479/AT-ISTA-20991.
short: D.F. Garcia Castillo, The Genomic Architecture of Local Adaptation in Introduced
Populations, Institute of Science and Technology Austria, 2026.
corr_author: '1'
date_created: 2026-01-16T09:47:59Z
date_published: 2026-01-16T00:00:00Z
date_updated: 2026-04-16T12:20:37Z
day: '16'
ddc:
- '576'
degree_awarded: PhD
department:
- _id: GradSch
- _id: NiBa
doi: 10.15479/AT-ISTA-20991
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date_created: 2026-01-16T12:25:13Z
date_updated: 2026-01-16T12:25:13Z
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creator: dgarciac
date_created: 2026-01-16T12:25:13Z
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content_type: application/x-compressed
creator: dgarciac
date_created: 2026-01-16T13:08:14Z
date_updated: 2026-01-16T13:08:14Z
description: Source code of the PostgreSQL database, front-end and back-end of the
LittorinaDB web application developed as a product of the 4th chapter of the thesis.
file_id: '20998'
file_name: 2026_DiegoGarcia_LittorinaDB Source Code and Protocols.rar
file_size: 54491433
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file_size: 7982811
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content_type: text/plain
creator: dgarciac
date_created: 2026-01-16T13:08:59Z
date_updated: 2026-01-16T13:08:59Z
file_id: '21000'
file_name: README.txt
file_size: 732
relation: supplementary_material
file_date_updated: 2026-01-16T13:08:59Z
has_accepted_license: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
page: '199'
publication_identifier:
isbn:
- 978-3-99078-077-0
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '18498'
relation: research_data
status: public
- id: '18491'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Nicholas H
full_name: Barton, Nicholas H
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
- first_name: Anja M
full_name: Westram, Anja M
id: 3C147470-F248-11E8-B48F-1D18A9856A87
last_name: Westram
orcid: 0000-0003-1050-4969
title: The genomic architecture of local adaptation in introduced populations
tmp:
image: /images/cc_by_nc_sa.png
legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC
BY-NC-SA 4.0)
short: CC BY-NC-SA (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2026'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '21537'
abstract:
- lang: eng
text: Nanophotonics has revolutionized the control of light-matter interactions
in various fields of fundamental science and technology. In this work, we propose
Implosion Fabrication (ImpFab) as a versatile nanophotonics fabrication platform
providing the highest spatial resolution, material versatility, and full volumetric
control. ImpFab uniquely combines top-down lithography with bottom-up nanoparticle
assembly within a hydrogel scaffold, enabling precise control over optical material
properties, such as refractive index, by adjusting printing parameters. We showcase
the potential of ImpFab by fabricating three-dimensional photonic crystals and
quasicrystals, as well as demonstrating optical structures with spatially modulated
unit cell material properties. Our results highlight the potential of ImpFab in
producing nanostructures with tailored optical functionalities, which are crucial
for applications in sensing, imaging, and information processing, and opening
new avenues in developing non-Hermitian photonic systems with spatially controlled
gain and loss.
article_number: '145'
article_processing_charge: No
article_type: original
author:
- first_name: Yannick
full_name: Salamin, Yannick
last_name: Salamin
- first_name: Gaojie
full_name: Yang, Gaojie
last_name: Yang
- first_name: Brian
full_name: Mills, Brian
last_name: Mills
- first_name: André
full_name: Grossi Fonseca, André
last_name: Grossi Fonseca
- first_name: Charles
full_name: Roques-Carmes, Charles
id: e2e68fc9-6505-11ef-a541-eb4e72cc3e82
last_name: Roques-Carmes
- first_name: Quansan
full_name: Yang, Quansan
last_name: Yang
- first_name: Justin
full_name: Beroz, Justin
last_name: Beroz
- first_name: Steven E.
full_name: Kooi, Steven E.
last_name: Kooi
- first_name: Marc
full_name: de Miguel Comella, Marc
last_name: de Miguel Comella
- first_name: Kiran
full_name: Mak, Kiran
last_name: Mak
- first_name: Sachin
full_name: Vaidya, Sachin
last_name: Vaidya
- first_name: Daniel
full_name: Oran, Daniel
last_name: Oran
- first_name: Corban
full_name: Swain, Corban
last_name: Swain
- first_name: Yi
full_name: Sun, Yi
last_name: Sun
- first_name: Shai
full_name: Maayani, Shai
last_name: Maayani
- first_name: Jamison
full_name: Sloan, Jamison
last_name: Sloan
- first_name: Amel
full_name: Amin Elfadil Elawad, Amel
last_name: Amin Elfadil Elawad
- first_name: Josue J.
full_name: Lopez, Josue J.
last_name: Lopez
- first_name: Edward S.
full_name: Boyden, Edward S.
last_name: Boyden
- first_name: Marin
full_name: Soljačić, Marin
last_name: Soljačić
citation:
ama: 'Salamin Y, Yang G, Mills B, et al. Three-dimensional nanophotonics with spatially
modulated optical properties. Light: Science & Applications. 2026;15.
doi:10.1038/s41377-025-02166-5'
apa: 'Salamin, Y., Yang, G., Mills, B., Grossi Fonseca, A., Roques-Carmes, C., Yang,
Q., … Soljačić, M. (2026). Three-dimensional nanophotonics with spatially modulated
optical properties. Light: Science & Applications. Springer Nature.
https://doi.org/10.1038/s41377-025-02166-5'
chicago: 'Salamin, Yannick, Gaojie Yang, Brian Mills, André Grossi Fonseca, Charles
Roques-Carmes, Quansan Yang, Justin Beroz, et al. “Three-Dimensional Nanophotonics
with Spatially Modulated Optical Properties.” Light: Science & Applications.
Springer Nature, 2026. https://doi.org/10.1038/s41377-025-02166-5.'
ieee: 'Y. Salamin et al., “Three-dimensional nanophotonics with spatially
modulated optical properties,” Light: Science & Applications, vol.
15. Springer Nature, 2026.'
ista: 'Salamin Y, Yang G, Mills B, Grossi Fonseca A, Roques-Carmes C, Yang Q, Beroz
J, Kooi SE, de Miguel Comella M, Mak K, Vaidya S, Oran D, Swain C, Sun Y, Maayani
S, Sloan J, Amin Elfadil Elawad A, Lopez JJ, Boyden ES, Soljačić M. 2026. Three-dimensional
nanophotonics with spatially modulated optical properties. Light: Science &
Applications. 15, 145.'
mla: 'Salamin, Yannick, et al. “Three-Dimensional Nanophotonics with Spatially Modulated
Optical Properties.” Light: Science & Applications, vol. 15, 145, Springer
Nature, 2026, doi:10.1038/s41377-025-02166-5.'
short: 'Y. Salamin, G. Yang, B. Mills, A. Grossi Fonseca, C. Roques-Carmes, Q. Yang,
J. Beroz, S.E. Kooi, M. de Miguel Comella, K. Mak, S. Vaidya, D. Oran, C. Swain,
Y. Sun, S. Maayani, J. Sloan, A. Amin Elfadil Elawad, J.J. Lopez, E.S. Boyden,
M. Soljačić, Light: Science & Applications 15 (2026).'
date_created: 2026-03-30T12:22:47Z
date_published: 2026-03-03T00:00:00Z
date_updated: 2026-04-27T07:59:10Z
day: '03'
ddc:
- '530'
doi: 10.1038/s41377-025-02166-5
extern: '1'
external_id:
pmid:
- ' 41775693'
intvolume: ' 15'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1038/s41377-025-02166-5
month: '03'
oa: 1
oa_version: Published Version
pmid: 1
publication: 'Light: Science & Applications'
publication_identifier:
eissn:
- 2047-7538
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Three-dimensional nanophotonics with spatially modulated optical properties
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 15
year: '2026'
...
---
OA_place: publisher
OA_type: hybrid
_id: '21555'
abstract:
- lang: eng
text: Spin-polarized electron beam sources enable studies of spin-dependent electric
and magnetic effects at the nanoscale. We propose a method of creating spin-polarized
electrons on an integrated photonics chip by laser-driven nanophotonic fields.
A two-stage interaction separated by a free-space drift length is proposed, where
the first stage and drift length introduces spin-dependent characteristics into
the probability distribution of the electron wave function. The second stage uses
an adjusted optical near field to rotate the spin states utilizing the spin-dependent
wave-packet distribution to produce electrons with high ensemble average spin
expectation values. This platform provides an integrated and compact method to
generate spin-polarized electrons, implementable with millimeter scale chips and
tabletop lasers.
article_number: '063802'
article_processing_charge: No
article_type: original
author:
- first_name: Clarisse
full_name: Woodahl, Clarisse
last_name: Woodahl
- first_name: Melanie
full_name: Murillo, Melanie
last_name: Murillo
- first_name: Charles
full_name: Roques-Carmes, Charles
id: e2e68fc9-6505-11ef-a541-eb4e72cc3e82
last_name: Roques-Carmes
- first_name: Aviv
full_name: Karnieli, Aviv
last_name: Karnieli
- first_name: David A. B.
full_name: Miller, David A. B.
last_name: Miller
- first_name: Olav
full_name: Solgaard, Olav
last_name: Solgaard
citation:
ama: Woodahl C, Murillo M, Roques-Carmes C, Karnieli A, Miller DAB, Solgaard O.
On-chip laser-driven free-electron spin polarizer. Physical Review Letters.
2026;136(6). doi:10.1103/3c1m-d3hh
apa: Woodahl, C., Murillo, M., Roques-Carmes, C., Karnieli, A., Miller, D. A. B.,
& Solgaard, O. (2026). On-chip laser-driven free-electron spin polarizer.
Physical Review Letters. American Physical Society. https://doi.org/10.1103/3c1m-d3hh
chicago: Woodahl, Clarisse, Melanie Murillo, Charles Roques-Carmes, Aviv Karnieli,
David A. B. Miller, and Olav Solgaard. “On-Chip Laser-Driven Free-Electron Spin
Polarizer.” Physical Review Letters. American Physical Society, 2026. https://doi.org/10.1103/3c1m-d3hh.
ieee: C. Woodahl, M. Murillo, C. Roques-Carmes, A. Karnieli, D. A. B. Miller, and
O. Solgaard, “On-chip laser-driven free-electron spin polarizer,” Physical
Review Letters, vol. 136, no. 6. American Physical Society, 2026.
ista: Woodahl C, Murillo M, Roques-Carmes C, Karnieli A, Miller DAB, Solgaard O.
2026. On-chip laser-driven free-electron spin polarizer. Physical Review Letters.
136(6), 063802.
mla: Woodahl, Clarisse, et al. “On-Chip Laser-Driven Free-Electron Spin Polarizer.”
Physical Review Letters, vol. 136, no. 6, 063802, American Physical Society,
2026, doi:10.1103/3c1m-d3hh.
short: C. Woodahl, M. Murillo, C. Roques-Carmes, A. Karnieli, D.A.B. Miller, O.
Solgaard, Physical Review Letters 136 (2026).
date_created: 2026-03-30T12:22:47Z
date_published: 2026-02-12T00:00:00Z
date_updated: 2026-04-27T08:34:51Z
day: '12'
ddc:
- '530'
doi: 10.1103/3c1m-d3hh
extern: '1'
intvolume: ' 136'
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1103/3c1m-d3hh
month: '02'
oa: 1
oa_version: Published Version
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: On-chip laser-driven free-electron spin polarizer
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 136
year: '2026'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '21583'
abstract:
- lang: eng
text: Non-Hermiticity naturally arises in physical systems that exchange energy
with their environment. The presence of non-Hermiticity leads to many topological
physics phenomena and device applications. In the non-Hermitian energy band theory,
the foundation of these physics and applications, both energies and wave vectors
take complex values. The energy bands thus become a Riemann surface, and such
an energy-band Riemann surface underlies all important signatures of non-Hermitian
topology. Despite a long history and recent theoretical interests, the energy-band
Riemann surface has not been experimentally studied. Here, we provide a photonic
observation of the energy-band Riemann surface of a non-Hermitian system. This
is achieved by a tunable imaginary gauge transformation in photonic synthetic
frequency dimensions. From measured topologies of the Riemann surface, we reveal
the complex-energy winding, the open-boundary-condition spectrum, the generalized
Brillouin zone, and the branch points. Our findings demonstrate a unified framework
in the studies of diverse effects in non-Hermitian topological physics through
an experimental observation of energy-band Riemann surfaces.
article_number: eaec8239
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Dali
full_name: Cheng, Dali
last_name: Cheng
- first_name: Heming
full_name: Wang, Heming
last_name: Wang
- first_name: Janet
full_name: Zhong, Janet
last_name: Zhong
- first_name: Eran
full_name: Lustig, Eran
last_name: Lustig
- first_name: Charles
full_name: Roques-Carmes, Charles
id: e2e68fc9-6505-11ef-a541-eb4e72cc3e82
last_name: Roques-Carmes
- first_name: Shanhui
full_name: Fan, Shanhui
last_name: Fan
citation:
ama: Cheng D, Wang H, Zhong J, Lustig E, Roques-Carmes C, Fan S. Experimental observation
of energy-band Riemann surface. Science Advances. 2026;12(12). doi:10.1126/sciadv.aec8239
apa: Cheng, D., Wang, H., Zhong, J., Lustig, E., Roques-Carmes, C., & Fan, S.
(2026). Experimental observation of energy-band Riemann surface. Science Advances.
American Association for the Advancement of Science. https://doi.org/10.1126/sciadv.aec8239
chicago: Cheng, Dali, Heming Wang, Janet Zhong, Eran Lustig, Charles Roques-Carmes,
and Shanhui Fan. “Experimental Observation of Energy-Band Riemann Surface.” Science
Advances. American Association for the Advancement of Science, 2026. https://doi.org/10.1126/sciadv.aec8239.
ieee: D. Cheng, H. Wang, J. Zhong, E. Lustig, C. Roques-Carmes, and S. Fan, “Experimental
observation of energy-band Riemann surface,” Science Advances, vol. 12,
no. 12. American Association for the Advancement of Science, 2026.
ista: Cheng D, Wang H, Zhong J, Lustig E, Roques-Carmes C, Fan S. 2026. Experimental
observation of energy-band Riemann surface. Science Advances. 12(12), eaec8239.
mla: Cheng, Dali, et al. “Experimental Observation of Energy-Band Riemann Surface.”
Science Advances, vol. 12, no. 12, eaec8239, American Association for the
Advancement of Science, 2026, doi:10.1126/sciadv.aec8239.
short: D. Cheng, H. Wang, J. Zhong, E. Lustig, C. Roques-Carmes, S. Fan, Science
Advances 12 (2026).
date_created: 2026-03-30T12:22:48Z
date_published: 2026-03-18T00:00:00Z
date_updated: 2026-04-27T10:01:35Z
day: '18'
doi: 10.1126/sciadv.aec8239
extern: '1'
external_id:
arxiv:
- '2510.08819'
intvolume: ' 12'
issue: '12'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1126/sciadv.aec8239
month: '03'
oa: 1
oa_version: Published Version
publication: Science Advances
publication_identifier:
issn:
- 2375-2548
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
scopus_import: '1'
status: public
title: Experimental observation of energy-band Riemann surface
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 12
year: '2026'
...
---
OA_place: publisher
OA_type: hybrid
PlanS_conform: '1'
_id: '21764'
abstract:
- lang: eng
text: "Colloidal fluids can exhibit complex phase behavior and determining phase
diagrams via experiments or computer simulations can be laborious. We demonstrate
that the dispersion relation ω(k), obtained from dynamical density functional
theory for the uniform density system, is a highly versatile tool for predicting
where in the phase diagram complex crystals form. The sign of ω(k) determines
whether density modes with wave number k grow or decay over time. We demonstrate
the predictive power by investigating the complex phase behavior of particles
interacting via core-shoulder pair potentials. With complementary Monte Carlo
simulations, we show that regions of the phase diagram where ωðkÞ has one or several
unstable (growing) wave numbers are also where crystalline phases occur. Going
further, by tuning these\r\nunstable wave numbers via the interaction-potential
and state-point parameters, we design systems with quasicrystals in the phase
diagram. We identify a system with a certain shoulder range exhibiting at least
ten different phases. Our general approach accelerates considerably the mapping
of complex phase diagrams, crucial for the design of new materials."
acknowledgement: "The authors thank Ms. Katrin Muck for her guidance related to the
use of HPC. The MC\r\ncomputer simulation results presented here were enabled via
a generous share of CPU time, offered by the Vienna Scientific Cluster (VSC) under
Project No. 71263. A. J. A. gratefully acknowledges support from the EPSRC under
Grant No. EP/P015689/1. This research was funded in part by the Austrian Science
Fund (FWF) [Grant DOI: 10.55776/PIN8759524], gratefully acknowledged by G. K ."
article_number: '148203'
article_processing_charge: Yes (in subscription journal)
article_type: original
arxiv: 1
author:
- first_name: Michael
full_name: Wassermair, Michael
id: 23d132c4-4e98-11ef-b275-9e8d4cd8c917
last_name: Wassermair
orcid: 0009-0003-6339-4051
- first_name: Gerhard
full_name: Kahl, Gerhard
last_name: Kahl
- first_name: Roland
full_name: Roth, Roland
last_name: Roth
- first_name: Andrew J.
full_name: Archer, Andrew J.
last_name: Archer
citation:
ama: Wassermair M, Kahl G, Roth R, Archer AJ. Navigating complex phase diagrams
in soft matter systems. Physical Review Letters. 2026;136(14). doi:10.1103/nbvt-fgjy
apa: Wassermair, M., Kahl, G., Roth, R., & Archer, A. J. (2026). Navigating
complex phase diagrams in soft matter systems. Physical Review Letters.
American Physical Society. https://doi.org/10.1103/nbvt-fgjy
chicago: Wassermair, Michael, Gerhard Kahl, Roland Roth, and Andrew J. Archer. “Navigating
Complex Phase Diagrams in Soft Matter Systems.” Physical Review Letters.
American Physical Society, 2026. https://doi.org/10.1103/nbvt-fgjy.
ieee: M. Wassermair, G. Kahl, R. Roth, and A. J. Archer, “Navigating complex phase
diagrams in soft matter systems,” Physical Review Letters, vol. 136, no.
14. American Physical Society, 2026.
ista: Wassermair M, Kahl G, Roth R, Archer AJ. 2026. Navigating complex phase diagrams
in soft matter systems. Physical Review Letters. 136(14), 148203.
mla: Wassermair, Michael, et al. “Navigating Complex Phase Diagrams in Soft Matter
Systems.” Physical Review Letters, vol. 136, no. 14, 148203, American Physical
Society, 2026, doi:10.1103/nbvt-fgjy.
short: M. Wassermair, G. Kahl, R. Roth, A.J. Archer, Physical Review Letters 136
(2026).
date_created: 2026-04-26T22:01:47Z
date_published: 2026-04-10T00:00:00Z
date_updated: 2026-04-28T07:03:48Z
day: '10'
ddc:
- '530'
department:
- _id: AnSa
- _id: GradSch
doi: 10.1103/nbvt-fgjy
external_id:
arxiv:
- '2603.18918'
file:
- access_level: open_access
checksum: 8ffb139122a185fcddbe6a9c901a287c
content_type: application/pdf
creator: dernst
date_created: 2026-04-28T06:58:40Z
date_updated: 2026-04-28T06:58:40Z
file_id: '21769'
file_name: 2026_PhysicalReviewLetters_Wassermair.pdf
file_size: 4336488
relation: main_file
success: 1
file_date_updated: 2026-04-28T06:58:40Z
has_accepted_license: '1'
intvolume: ' 136'
issue: '14'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Navigating complex phase diagrams in soft matter systems
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 136
year: '2026'
...
---
OA_type: closed access
_id: '21765'
abstract:
- lang: eng
text: "Dielectric particles of the same material exchange electrical charge during
collisions or sliding contacts, yet the underlying charge-exchange mechanism is
still not understood. The fact that particles can become highly charged as a result
of this effect has significant consequences for many settings, both in nature
and industry, such as thunderstorms, volcanic eruptions, particle aggregation
during meteorite and planet formation, and the clogging of industrial granular
systems. Toward understanding these systems, great efforts have been made to develop
precise in situ measurements for particle charge, e.g., to determine ensemble
charge distributions or measure exchange during individual contacts. Here, we
present experimental results concerning the particle size scaling of the stationary-state
charge distributions of oxide particles in the sub-millimeter range. We measure
the charge distributions for large ensembles of monodisperse ZrO2:SiO2 composite
spheres, ranging from 172 to 545µm in diameter. These distributions are non-Gaussian
and collapse to a single master curve when plotted as functions of the surface
charge density Σ=\U0001D45E/4\U0001D70B\U0001D4452. X-ray fluorescence and atomic
force microscopy measurements show that the differences in the measured charge
distributions are not due to variations in chemical composition or surface roughness,
but rather to size alone. Our findings provide constraints on microscopic models
for charge exchange, namely that they should lead to steady-state distributions
that are non-Gaussian and scale in a specific way with particle size."
acknowledgement: This research was supported by ANID Grants QUIMAL No. 160001, FONDECYT
No. 1221597, and FONDEQUIP No. EQM190177. The authors thank Rodrigo Espinoza for
the EDS-SEM measurements and Domingo Jullian for fruitful discussions. We also acknowledge
the technical assistance of Ricardo Silva and Andrés Espinosa at DFI, FCFM, Universidad
de Chile.
article_number: '045604'
article_processing_charge: No
article_type: original
author:
- first_name: Macarena
full_name: Lara, Macarena
last_name: Lara
- first_name: Marcos
full_name: Flores, Marcos
last_name: Flores
- first_name: Gustavo
full_name: Castillo, Gustavo
last_name: Castillo
- first_name: Santiago
full_name: Tassara, Santiago
last_name: Tassara
- first_name: Scott R
full_name: Waitukaitis, Scott R
id: 3A1FFC16-F248-11E8-B48F-1D18A9856A87
last_name: Waitukaitis
orcid: 0000-0002-2299-3176
- first_name: Nicolás
full_name: Mujica, Nicolás
last_name: Mujica
citation:
ama: Lara M, Flores M, Castillo G, Tassara S, Waitukaitis SR, Mujica N. Particle
size scaling of non-Gaussian granular charge distributions. Physical Review
Materials. 2026;10(4). doi:10.1103/qw6t-xqdw
apa: Lara, M., Flores, M., Castillo, G., Tassara, S., Waitukaitis, S. R., &
Mujica, N. (2026). Particle size scaling of non-Gaussian granular charge distributions.
Physical Review Materials. American Physical Society. https://doi.org/10.1103/qw6t-xqdw
chicago: Lara, Macarena, Marcos Flores, Gustavo Castillo, Santiago Tassara, Scott
R Waitukaitis, and Nicolás Mujica. “Particle Size Scaling of Non-Gaussian Granular
Charge Distributions.” Physical Review Materials. American Physical Society,
2026. https://doi.org/10.1103/qw6t-xqdw.
ieee: M. Lara, M. Flores, G. Castillo, S. Tassara, S. R. Waitukaitis, and N. Mujica,
“Particle size scaling of non-Gaussian granular charge distributions,” Physical
Review Materials, vol. 10, no. 4. American Physical Society, 2026.
ista: Lara M, Flores M, Castillo G, Tassara S, Waitukaitis SR, Mujica N. 2026. Particle
size scaling of non-Gaussian granular charge distributions. Physical Review Materials.
10(4), 045604.
mla: Lara, Macarena, et al. “Particle Size Scaling of Non-Gaussian Granular Charge
Distributions.” Physical Review Materials, vol. 10, no. 4, 045604, American
Physical Society, 2026, doi:10.1103/qw6t-xqdw.
short: M. Lara, M. Flores, G. Castillo, S. Tassara, S.R. Waitukaitis, N. Mujica,
Physical Review Materials 10 (2026).
date_created: 2026-04-26T22:01:47Z
date_published: 2026-04-01T00:00:00Z
date_updated: 2026-04-28T07:13:56Z
day: '01'
department:
- _id: ScWa
doi: 10.1103/qw6t-xqdw
intvolume: ' 10'
issue: '4'
language:
- iso: eng
month: '04'
oa_version: None
publication: Physical Review Materials
publication_identifier:
eissn:
- 2475-9953
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Particle size scaling of non-Gaussian granular charge distributions
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 10
year: '2026'
...
---
OA_place: publisher
OA_type: hybrid
PlanS_conform: '1'
_id: '21743'
abstract:
- lang: eng
text: We present symplectic structures on the shape space of unparameterized space
curves that generalize the classical Marsden–Weinstein structure. Our method integrates
the Liouville 1-form of the Marsden–Weinstein structure with Riemannian structures
that have been introduced in mathematical shape analysis. We also derive Hamiltonian
vector fields for several classical Hamiltonian functions with respect to these
new symplectic structures.
acknowledgement: The authors are grateful to Boris Khesin for valuable comments on
the MW symplectic structure and S. Ishida thanks Albert Chern for insightful discussions
on space curves and Chris Wojtan for his continuous support. M. Bauer was partially
supported by NSF grant DMS-1953244 and by the Binational Science Foundation (BSF).
S. Ishida was partially supported by ERC Consolidator Grant 101045083 “CoDiNA” funded
by the European Research Council. Some figures were generated by the software Houdini
and its education license was provided by SideFX. Open access funding provided by
University of Vienna.
article_number: '45'
article_processing_charge: Yes (via OA deal)
article_type: original
arxiv: 1
author:
- first_name: Martin
full_name: Bauer, Martin
last_name: Bauer
- first_name: Sadashige
full_name: Ishida, Sadashige
id: 6F7C4B96-A8E9-11E9-A7CA-09ECE5697425
last_name: Ishida
orcid: 0000-0002-3121-3100
- first_name: Peter W.
full_name: Michor, Peter W.
last_name: Michor
citation:
ama: Bauer M, Ishida S, Michor PW. Symplectic structures on the space of space curves.
Journal of Nonlinear Science. 2026;36(2). doi:10.1007/s00332-026-10266-8
apa: Bauer, M., Ishida, S., & Michor, P. W. (2026). Symplectic structures on
the space of space curves. Journal of Nonlinear Science. Springer Nature.
https://doi.org/10.1007/s00332-026-10266-8
chicago: Bauer, Martin, Sadashige Ishida, and Peter W. Michor. “Symplectic Structures
on the Space of Space Curves.” Journal of Nonlinear Science. Springer Nature,
2026. https://doi.org/10.1007/s00332-026-10266-8.
ieee: M. Bauer, S. Ishida, and P. W. Michor, “Symplectic structures on the space
of space curves,” Journal of Nonlinear Science, vol. 36, no. 2. Springer
Nature, 2026.
ista: Bauer M, Ishida S, Michor PW. 2026. Symplectic structures on the space of
space curves. Journal of Nonlinear Science. 36(2), 45.
mla: Bauer, Martin, et al. “Symplectic Structures on the Space of Space Curves.”
Journal of Nonlinear Science, vol. 36, no. 2, 45, Springer Nature, 2026,
doi:10.1007/s00332-026-10266-8.
short: M. Bauer, S. Ishida, P.W. Michor, Journal of Nonlinear Science 36 (2026).
date_created: 2026-04-16T07:29:17Z
date_published: 2026-04-15T00:00:00Z
date_updated: 2026-04-28T09:59:01Z
day: '15'
ddc:
- '510'
department:
- _id: GradSch
- _id: ChWo
doi: 10.1007/s00332-026-10266-8
external_id:
arxiv:
- '2407.19908'
file:
- access_level: open_access
checksum: 760de2631b6fd7d57bcd5115ed36c0a2
content_type: application/pdf
creator: dernst
date_created: 2026-04-28T09:55:32Z
date_updated: 2026-04-28T09:55:32Z
file_id: '21770'
file_name: 2026_JourNonlinearScience_Bauer.pdf
file_size: 1108518
relation: main_file
success: 1
file_date_updated: 2026-04-28T09:55:32Z
has_accepted_license: '1'
intvolume: ' 36'
issue: '2'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
project:
- _id: 34bc2376-11ca-11ed-8bc3-9a3b3961a088
grant_number: '101045083'
name: Computational Discovery of Numerical Algorithms for Animation and Simulation
of Natural Phenomena
publication: Journal of Nonlinear Science
publication_identifier:
eissn:
- 1432-1467
issn:
- 0938-8974
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
record:
- id: '17361'
relation: earlier_version
status: public
scopus_import: '1'
status: public
title: Symplectic structures on the space of space curves
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 36
year: '2026'
...
---
OA_place: repository
OA_type: green
_id: '21737'
abstract:
- lang: eng
text: In calculus, l'Hopital's rule provides a simple way to evaluate the limits
of quotient functions when both the numerator and denominator vanish. But what
happens when we move beyond real functions on a real interval? In this article,
we study when the quotient of two complex-valued functions in higher dimension
can be defined continuously at the points where both functions vanish. Surprisingly,
the answer is far subtler than in the real-valued setting. We provide a complete
characterization for the continuity of the quotient function. We also point out
why extending this result to smoother quotients remains an intriguing challenge.
acknowledgement: "This project was funded in part by the European Research Council
(ERC Consolidator Grant 101045083 CoDiNA) and the National Science Foundation CAREER
Award 2239062.\r\n"
article_number: '2602.09958'
article_processing_charge: No
arxiv: 1
author:
- first_name: Albert
full_name: Chern, Albert
last_name: Chern
- first_name: Sadashige
full_name: Ishida, Sadashige
id: 6F7C4B96-A8E9-11E9-A7CA-09ECE5697425
last_name: Ishida
orcid: 0000-0002-3121-3100
citation:
ama: Chern A, Ishida S. L’Hopital rules for complex-valued functions in higher dimensions.
arXiv. doi:10.48550/ARXIV.2602.09958
apa: Chern, A., & Ishida, S. (n.d.). L’Hopital rules for complex-valued functions
in higher dimensions. arXiv. https://doi.org/10.48550/ARXIV.2602.09958
chicago: Chern, Albert, and Sadashige Ishida. “L’Hopital Rules for Complex-Valued
Functions in Higher Dimensions.” ArXiv, n.d. https://doi.org/10.48550/ARXIV.2602.09958.
ieee: A. Chern and S. Ishida, “L’Hopital rules for complex-valued functions in higher
dimensions,” arXiv. .
ista: Chern A, Ishida S. L’Hopital rules for complex-valued functions in higher
dimensions. arXiv, 2602.09958.
mla: Chern, Albert, and Sadashige Ishida. “L’Hopital Rules for Complex-Valued Functions
in Higher Dimensions.” ArXiv, 2602.09958, doi:10.48550/ARXIV.2602.09958.
short: A. Chern, S. Ishida, ArXiv (n.d.).
corr_author: '1'
date_created: 2026-04-15T16:28:24Z
date_published: 2026-02-10T00:00:00Z
date_updated: 2026-04-28T10:56:30Z
day: '10'
ddc:
- '510'
department:
- _id: GradSch
- _id: ChWo
doi: 10.48550/ARXIV.2602.09958
external_id:
arxiv:
- '2602.09958'
file:
- access_level: open_access
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creator: dernst
date_created: 2026-04-28T10:53:27Z
date_updated: 2026-04-28T10:53:27Z
file_id: '21771'
file_name: 2026_arXiv_2602.09958.pdf
file_size: 867109
relation: main_file
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file_date_updated: 2026-04-28T10:53:27Z
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keyword:
- l’Hopital theorem
- complex functions
language:
- iso: eng
month: '02'
oa: 1
oa_version: Preprint
project:
- _id: 34bc2376-11ca-11ed-8bc3-9a3b3961a088
grant_number: '101045083'
name: Computational Discovery of Numerical Algorithms for Animation and Simulation
of Natural Phenomena
publication: arXiv
publication_status: submitted
status: public
title: L'Hopital rules for complex-valued functions in higher dimensions
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2026'
...
---
OA_place: publisher
OA_type: hybrid
_id: '21767'
abstract:
- lang: eng
text: 'The involvement of non-scientific staff in discussions about animal welfare
and scientific quality is essential for biomedical research progress. In this
study, we developed a survey to collect the self-perception of animal care staff
(ACS) and laboratory technicians about their involvement in scientific planning
and conduct. Participants were contacted to complete an anonymous online questionnaire.
We obtained 850 responses, mainly from Europe: 564 from ACS and 286 from laboratory
technicians. Job satisfaction was assessed as positive by ACS and laboratory technicians
despite the low frequency of culture of care activities and mental health meetings.
Both groups expressed their desire to be trained in research planning and conduct;
however, regular training was not reported. In addition, the inability to act
on animal welfare concerns owing to experimental reasons was reported by both
groups. Over half of the participants felt valued and appreciated by the lead
scientists or animal facility manager; however, it is not clear how they are acknowledged,
as their names on the authors list or in the manuscript acknowledgments are barely
included. Our results indicated that involvement of ACS and laboratory technicians
in planning and conducting studies would improve their understanding of how experiments
are done, and therefore communication processes, work satisfaction, animal welfare,
and scientific quality. Finally, we provided recommendations to improve the engagement
of ACS and laboratory technicians in discussions about animal research planning
and conduct.'
- lang: fre
text: 'La participation de personnel non-scientifique aux discussions sur le bien-être
animal et la qualité scientifique est essentielle aux progrès la recherche biomédicale.
Dans cette étude, nous avons développé une enquête pour recueillir l''auto-perception
du personnel chargé des soins prodigués aux animaux (PCSA) et des techniciens
de laboratoire (TL) sur leur implication dans la planification et la conduite
scientifiques. Les participants ont été contactés pour remplir un questionnaire
anonyme en ligne. Nous avons obtenu 850 réponses, principalement en Europe : 564
provenant de PCSA et 286 de TL. La satisfaction au travail a été évaluée comme
positive par le PCSA et les TL malgré la faible fréquence d’activités sur la culture
des soins et de réunions concernant la santé mentale. Bien que les deux groupes
aient exprimé leur désir d''être formés à la planification et à la conduite de
la recherche, aucune formation réelle régulière n''a été signalée. De plus, l''incapacité
d''agir sur les préoccupations relatives au bien-être animal pour des raisons
expérimentales a été signalée par les deux groupes. Plus de la moitié des participants
se sont sentis valorisés et appréciés par les scientifiques principaux ou le gestionnaire
de l’installation animale mais on ne sait pas clairement comment ils sont reconnus,
car leurs noms sur la liste des auteurs ou dans les remerciements sont à peine
inclus dans la documentation. Nos résultats ont indiqué que la participation du
PCSA et des TL à la planification et à la conduite des études améliorerait leur
compréhension de la façon dont les expériences sont effectuées et, par conséquent,
les processus de communication, leur satisfaction au travail ainsi que le bien-être
animal et la qualité scientifique. Enfin, nous avons formulé des recommandations
pour améliorer la participation du PCSA et des TL aux discussions sur la planification
et la conduite de la recherche animale.'
- lang: ger
text: 'Die Einbeziehung von nichtwissenschaftlichem Personal in Diskussionen über
Tierschutz und wissenschaftliche Qualität ist für Fortschritte in biomedizinischer
Forschung von entscheidender Bedeutung. In dieser Studie haben wir eine Umfrage
entwickelt, um die Selbsteinschätzung von Tierpflegern (ACS) und Labortechnikern
(LT) hinsichtlich ihrer Beteiligung an der wissenschaftlichen Planung und Durchführung
zu erfassen. Die Teilnehmer wurden gebeten, einen anonymen Online-Fragebogen auszufüllen.
Wir erhielten 850 Rückmeldungen, hauptsächlich aus Europa: 564 von ACS und 286
von LT. Die Arbeitszufriedenheit wurde von ACS und LT trotz der geringen Häufigkeit
von Pflegeaktivitäten und Treffen zum Thema psychische Gesundheit als positiv
bewertet. Beide Gruppen äußerten den Wunsch, in der Forschungsplanung und -durchführung
geschult zu werden, doch regelmäßig stattfindende Schulungen wurden nicht berichtet.
Außerdem wurde von beiden Gruppen vermeldet, dass sie aus versuchstechnischen
Gründen nicht in der Lage waren, auf Tierschutzbedenken zu reagieren. Über die
Hälfte der Teilnehmer fühlte sich von den leitenden Wissenschaftlern oder dem
Leiter der Tierhaltungseinrichtung geschätzt und anerkannt; es ist jedoch unklar,
inwiefern sie wirklich gewürdigt werden, da ihre Namen kaum in der Autorenliste
oder in den Danksagungen des Manuskripts aufgeführt sind. Unsere Ergebnisse deuteten
darauf hin, dass die Einbeziehung von ACS und LT in die Planung und Durchführung
von Studien ihr Verständnis für die Durchführung von Experimenten verbessern würde
– und damit auch Kommunikationsprozesse, Arbeitszufriedenheit, Tierwohl und wissenschaftliche
Qualität. Abschließend gaben wir Empfehlungen zur Verbesserung der Einbeziehung
von ACS und LT in Diskussionen über die Planung und Durchführung von Tierversuchen.'
- lang: spa
text: 'La participación del personal no científico en los debates sobre el bienestar
animal y la calidad científica es fundamental para el avance de la investigación
biomédica. En este estudio, desarrollamos una encuesta para recoger la autopercepción
del personal encargado del cuidado de los animales (ACS) y de los técnicos de
laboratorio (LT) sobre su implicación en la planificación y la realización científicas.
Se contactó con los participantes para que cumplimentaran un cuestionario anónimo
en línea. Obtuvimos 850 respuestas, principalmente de Europa: 564 de ACS y 286
de LT. La satisfacción laboral fue evaluada como positiva por ACS y técnicos de
laboratorio a pesar de la baja frecuencia de actividades de cultura del cuidado
y reuniones sobre bienestar mental. Ambos grupos expresaron su deseo de recibir
formación en planificación y realización de investigaciones, sin embargo, no se
informó sobre una formación regular. Asimismo, ambos grupos señalaron la incapacidad
de actuar ante las preocupaciones sobre el bienestar animal por motivos experimentales.
Más de la mitad de los participantes se sintieron valorados y apreciados por los
científicos principales o el responsable de las instalaciones de animales; sin
embargo, no está claro cómo se les reconoce, ya que apenas se incluyen sus nombres
en la lista de autores o en los agradecimientos del manuscrito. Nuestros resultados
indicaron que la participación de los ACS y los LT en la planificación y realización
de los estudios mejoraría su comprensión de cómo se hacen los experimentos y,
por tanto, los procesos de comunicación, la satisfacción laboral, el bienestar
animal y la calidad científica. Finalmente, proporcionamos recomendaciones para
mejorar el compromiso de la AEC y la LT en los debates sobre la planificación
y la realización de investigaciones con animales.'
acknowledgement: "We deeply acknowledge all the animal care staff and laboratory technicians
who participated in this study! We acknowledge Working Groups 1 and 4 from COST
Action IMPROVE (“3Rs concepts to improve the quality of biomedical science”), CA21139,
supported by COST (European Cooperation in Science and Technology) for their feedback
and support. We also acknowledge Aoife Milford for her comments and contributions
to the final draft of the manuscript.\r\nThis publication was based on work from
the COST Action IMPROVE (“3Rs concepts to improve the quality of biomedical science”),
CA21139, supported by COST (European Cooperation in Science and Technology)."
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Fernando
full_name: Gonzalez-Uarquin, Fernando
last_name: Gonzalez-Uarquin
- first_name: Paulin
full_name: Jirkof, Paulin
last_name: Jirkof
- first_name: Bettina
full_name: Bert, Bettina
last_name: Bert
- first_name: Penny
full_name: Hawkins, Penny
last_name: Hawkins
- first_name: Ljupco
full_name: Angelovski, Ljupco
last_name: Angelovski
- first_name: Jan
full_name: Baumgart, Jan
last_name: Baumgart
- first_name: Nadine
full_name: Baumgart, Nadine
last_name: Baumgart
- first_name: Özge S.
full_name: Cevik, Özge S.
last_name: Cevik
- first_name: Nuno H.
full_name: Franco, Nuno H.
last_name: Franco
- first_name: Erdal
full_name: Horata, Erdal
last_name: Horata
- first_name: Rohish
full_name: Kaura, Rohish
last_name: Kaura
- first_name: Winfried
full_name: Neuhaus, Winfried
last_name: Neuhaus
- first_name: Brigida
full_name: Riso, Brigida
last_name: Riso
- first_name: Adrian J.
full_name: Smith, Adrian J.
last_name: Smith
- first_name: Athanassia
full_name: Sotiropoulos, Athanassia
last_name: Sotiropoulos
- first_name: Augusto
full_name: Vitale, Augusto
last_name: Vitale
- first_name: Sophie
full_name: Schober, Sophie
id: 80b0a0ef-4b9f-11ec-b119-8d9d94c4a1d8
last_name: Schober
citation:
ama: 'Gonzalez-Uarquin F, Jirkof P, Bert B, et al. Building bridges: Involvement
of animal care staff and laboratory technicians in experimental planning and conduct
of animal studies for better job satisfaction and science. Laboratory Animals.
2026. doi:10.1177/00236772251400976'
apa: 'Gonzalez-Uarquin, F., Jirkof, P., Bert, B., Hawkins, P., Angelovski, L., Baumgart,
J., … Schober, S. (2026). Building bridges: Involvement of animal care staff and
laboratory technicians in experimental planning and conduct of animal studies
for better job satisfaction and science. Laboratory Animals. SAGE Publications.
https://doi.org/10.1177/00236772251400976'
chicago: 'Gonzalez-Uarquin, Fernando, Paulin Jirkof, Bettina Bert, Penny Hawkins,
Ljupco Angelovski, Jan Baumgart, Nadine Baumgart, et al. “Building Bridges: Involvement
of Animal Care Staff and Laboratory Technicians in Experimental Planning and Conduct
of Animal Studies for Better Job Satisfaction and Science.” Laboratory Animals.
SAGE Publications, 2026. https://doi.org/10.1177/00236772251400976.'
ieee: 'F. Gonzalez-Uarquin et al., “Building bridges: Involvement of animal
care staff and laboratory technicians in experimental planning and conduct of
animal studies for better job satisfaction and science,” Laboratory Animals.
SAGE Publications, 2026.'
ista: 'Gonzalez-Uarquin F, Jirkof P, Bert B, Hawkins P, Angelovski L, Baumgart J,
Baumgart N, Cevik ÖS, Franco NH, Horata E, Kaura R, Neuhaus W, Riso B, Smith AJ,
Sotiropoulos A, Vitale A, Schober S. 2026. Building bridges: Involvement of animal
care staff and laboratory technicians in experimental planning and conduct of
animal studies for better job satisfaction and science. Laboratory Animals.'
mla: 'Gonzalez-Uarquin, Fernando, et al. “Building Bridges: Involvement of Animal
Care Staff and Laboratory Technicians in Experimental Planning and Conduct of
Animal Studies for Better Job Satisfaction and Science.” Laboratory Animals,
SAGE Publications, 2026, doi:10.1177/00236772251400976.'
short: F. Gonzalez-Uarquin, P. Jirkof, B. Bert, P. Hawkins, L. Angelovski, J. Baumgart,
N. Baumgart, Ö.S. Cevik, N.H. Franco, E. Horata, R. Kaura, W. Neuhaus, B. Riso,
A.J. Smith, A. Sotiropoulos, A. Vitale, S. Schober, Laboratory Animals (2026).
date_created: 2026-04-26T22:01:47Z
date_published: 2026-04-14T00:00:00Z
date_updated: 2026-04-28T12:22:17Z
day: '14'
department:
- _id: PreCl
doi: 10.1177/00236772251400976
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1177/00236772251400976
month: '04'
oa: 1
oa_version: Published Version
publication: Laboratory Animals
publication_identifier:
eissn:
- 1758-1117
issn:
- 0023-6772
publication_status: epub_ahead
publisher: SAGE Publications
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Building bridges: Involvement of animal care staff and laboratory technicians
in experimental planning and conduct of animal studies for better job satisfaction
and science'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2026'
...