---
DOAJ_listed: '1'
OA_place: publisher
OA_type: diamond
PlanS_conform: '1'
_id: '21659'
abstract:
- lang: eng
text: The recent detection of solar equatorial Rossby waves has renewed interest
in the study of gravito-inertial waves propagating in the convective envelope
of solar-type stars. In particular, the ability of these envelope gravito-inertial
modes to couple with those trapped in the radiative interior could open up new
opportunities for probing the deep-layer dynamics of solar-type stars. The possibility
for such a coupling to occur is particularly favoured among pre-main-sequence
(PMS) solar-type stars. Indeed, due to the contraction of the protostellar object,
they are able to reach high rotation frequencies before nuclear reactions are
ignited and magnetic braking becomes the driving mechanism for their rotational
evolution. In this work, we studied the coupling between the envelope inertial
waves and the radiative interior g modes in PMS stars, focussing on the case of
prograde dipolar modes. We considered the cases of 0.5 M⊙ and 1 M⊙ PMS models,
each with three different scenarios of rotational evolution. We show that for
stars that have formed with a sufficient amount of angular momentum, this coupling
can occur in frequency ranges that are accessible to space-borne photometry, creating
inertial dips in the period spacing pattern. Using an asymptotic analysis, we
characterised the shape of these inertial dips to show that they depend on rotation
and on the stiffness of the convective-radiative interface.
acknowledgement: 'The authors want to thank the anonymous referee for useful comments.
SNB acknowledges support from PLATO ASI-INAF agreement no. 2022-28-HH.0 “PLATO Fase
D”. SNB and AFL acknowledge support from the INAF grant MASTODINT. CP thanks the
Belgian Federal Science Policy Office (BELSPO) for the financial support in the
framework of the PRODEX Program of the European Space Agency (ESA) under contract
number 4000141194. S.M acknowledges support from the CNES GOLF-SOHO and PLATO grants
at CEA/DAp. LB and SM gratefully acknowledge support from the European Research
Council (ERC) under the Horizon Europe programme (LB: Calcifer; Starting Grant agreement
N°101165631; SM: 4D-STAR; Synergy Grant agreement N°101071505). While partially
funded by the European Union, 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. Neither the European Union nor the granting authority
can be held responsible for them. The authors acknowledge G. Buldgen, H. Dhouib,
and M.A. Dupret for fruitful discussions.'
article_number: L16
article_processing_charge: No
article_type: letter_editor
arxiv: 1
author:
- first_name: S. N.
full_name: Breton, S. N.
last_name: Breton
- first_name: C.
full_name: Pezzotti, C.
last_name: Pezzotti
- first_name: S.
full_name: Mathis, S.
last_name: Mathis
- first_name: Lisa Annabelle
full_name: Bugnet, Lisa Annabelle
id: d9edb345-f866-11ec-9b37-d119b5234501
last_name: Bugnet
orcid: 0000-0003-0142-4000
- first_name: M. P.
full_name: Di Mauro, M. P.
last_name: Di Mauro
- first_name: J.
full_name: Joergensen, J.
last_name: Joergensen
- first_name: K.
full_name: Zwintz, K.
last_name: Zwintz
- first_name: A. F.
full_name: Lanza, A. F.
last_name: Lanza
citation:
ama: Breton SN, Pezzotti C, Mathis S, et al. Core-envelope coupling of gravito-inertial
waves in pre-main-sequence solar-type stars. Astronomy & Astrophysics.
2026;707. doi:10.1051/0004-6361/202659309
apa: Breton, S. N., Pezzotti, C., Mathis, S., Bugnet, L. A., Di Mauro, M. P., Joergensen,
J., … Lanza, A. F. (2026). Core-envelope coupling of gravito-inertial waves in
pre-main-sequence solar-type stars. Astronomy & Astrophysics. Wiley.
https://doi.org/10.1051/0004-6361/202659309
chicago: Breton, S. N., C. Pezzotti, S. Mathis, Lisa Annabelle Bugnet, M. P. Di
Mauro, J. Joergensen, K. Zwintz, and A. F. Lanza. “Core-Envelope Coupling of Gravito-Inertial
Waves in Pre-Main-Sequence Solar-Type Stars.” Astronomy & Astrophysics.
Wiley, 2026. https://doi.org/10.1051/0004-6361/202659309.
ieee: S. N. Breton et al., “Core-envelope coupling of gravito-inertial waves
in pre-main-sequence solar-type stars,” Astronomy & Astrophysics, vol.
707. Wiley, 2026.
ista: Breton SN, Pezzotti C, Mathis S, Bugnet LA, Di Mauro MP, Joergensen J, Zwintz
K, Lanza AF. 2026. Core-envelope coupling of gravito-inertial waves in pre-main-sequence
solar-type stars. Astronomy & Astrophysics. 707, L16.
mla: Breton, S. N., et al. “Core-Envelope Coupling of Gravito-Inertial Waves in
Pre-Main-Sequence Solar-Type Stars.” Astronomy & Astrophysics, vol.
707, L16, Wiley, 2026, doi:10.1051/0004-6361/202659309.
short: S.N. Breton, C. Pezzotti, S. Mathis, L.A. Bugnet, M.P. Di Mauro, J. Joergensen,
K. Zwintz, A.F. Lanza, Astronomy & Astrophysics 707 (2026).
date_created: 2026-04-05T22:01:32Z
date_published: 2026-03-01T00:00:00Z
date_updated: 2026-04-07T09:23:27Z
day: '01'
ddc:
- '520'
department:
- _id: LiBu
doi: 10.1051/0004-6361/202659309
external_id:
arxiv:
- '2603.01979'
file:
- access_level: open_access
checksum: a7fd798bf450d67d4166fdf54ff2c70c
content_type: application/pdf
creator: dernst
date_created: 2026-04-07T09:20:02Z
date_updated: 2026-04-07T09:20:02Z
file_id: '21666'
file_name: 2026_AstronomyAstrophysics_Breton.pdf
file_size: 1535506
relation: main_file
success: 1
file_date_updated: 2026-04-07T09:20:02Z
has_accepted_license: '1'
intvolume: ' 707'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 914d8549-16d5-11f0-9cad-bbe6324c93a9
grant_number: '101165631'
name: 'Unveiling the mysteries of stellar dynamics: a pioneering journey in magnetoasteroseismology'
publication: Astronomy & Astrophysics
publication_identifier:
eissn:
- 1432-0746
issn:
- 0004-6361
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: Core-envelope coupling of gravito-inertial waves in pre-main-sequence solar-type
stars
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: 707
year: '2026'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
PlanS_conform: '1'
_id: '21660'
abstract:
- lang: eng
text: Kapitza-Dirac scattering, the diffraction of matter waves from a standing
light field, is widely utilized in ultracold gases, but its behavior in the strongly
interacting regime is an open question. Here, we develop a numerically exact two-body
description of Kapitza-Dirac scattering for two contact-interacting atoms in a
one-dimensional harmonic trap subjected to a pulsed optical lattice, enabling
us to obtain the numerically exact dynamics. We map how interaction strength,
lattice depth, lattice wave number, and pulse duration reshape the diffraction
pattern, leading to an interaction-dependent population redistribution in real
and momentum space. By comparing the exact dynamics to an impulsive sudden-approximation
description, we delineate the parameter regimes where it remains accurate and
those, notably at strong attraction and small lattice wave number, where it fails.
Our results provide a controlled few-body benchmark for interacting Kapitza-Dirac
scattering and quantitative guidance for Kapitza-Dirac-based probes of ultracold
atomic systems.
acknowledgement: We thank Max Hachmann, Andreas Hemmerich, and Yann Kiefer for valuable
discussions. This work has been funded by the Cluster of Excellence “Advanced Imaging
of Matter” of the Deutsche Forschungsgemeinschaft (DFG) - EXC 2056 - Project ID
390715994. G.M.K. has received funding by the Austrian Science Fund (FWF) 10.55776/F1004.
article_number: '013297'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: A.
full_name: Becker, A.
last_name: Becker
- first_name: Georgios
full_name: Koutentakis, Georgios
id: d7b23d3a-9e21-11ec-b482-f76739596b95
last_name: Koutentakis
- first_name: P.
full_name: Schmelcher, P.
last_name: Schmelcher
citation:
ama: Becker A, Koutentakis G, Schmelcher P. Two-body Kapitza-Dirac scattering of
one-dimensional ultracold atoms. Physical Review Research. 2026;8. doi:10.1103/rdsn-stlq
apa: Becker, A., Koutentakis, G., & Schmelcher, P. (2026). Two-body Kapitza-Dirac
scattering of one-dimensional ultracold atoms. Physical Review Research.
American Physical Society. https://doi.org/10.1103/rdsn-stlq
chicago: Becker, A., Georgios Koutentakis, and P. Schmelcher. “Two-Body Kapitza-Dirac
Scattering of One-Dimensional Ultracold Atoms.” Physical Review Research.
American Physical Society, 2026. https://doi.org/10.1103/rdsn-stlq.
ieee: A. Becker, G. Koutentakis, and P. Schmelcher, “Two-body Kapitza-Dirac scattering
of one-dimensional ultracold atoms,” Physical Review Research, vol. 8.
American Physical Society, 2026.
ista: Becker A, Koutentakis G, Schmelcher P. 2026. Two-body Kapitza-Dirac scattering
of one-dimensional ultracold atoms. Physical Review Research. 8, 013297.
mla: Becker, A., et al. “Two-Body Kapitza-Dirac Scattering of One-Dimensional Ultracold
Atoms.” Physical Review Research, vol. 8, 013297, American Physical Society,
2026, doi:10.1103/rdsn-stlq.
short: A. Becker, G. Koutentakis, P. Schmelcher, Physical Review Research 8 (2026).
corr_author: '1'
date_created: 2026-04-05T22:01:32Z
date_published: 2026-03-18T00:00:00Z
date_updated: 2026-04-07T09:37:57Z
day: '18'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1103/rdsn-stlq
external_id:
arxiv:
- '2512.15260'
file:
- access_level: open_access
checksum: 339bff9d13486a8028049404988b9b0b
content_type: application/pdf
creator: dernst
date_created: 2026-04-07T09:34:31Z
date_updated: 2026-04-07T09:34:31Z
file_id: '21667'
file_name: 2026_PhysicalReviewResearch_Becker.pdf
file_size: 2131627
relation: main_file
success: 1
file_date_updated: 2026-04-07T09:34:31Z
has_accepted_license: '1'
intvolume: ' 8'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 7c040762-9f16-11ee-852c-dd79eeee4ab3
grant_number: F100403
name: Coherent Optical Metrology Beyond Electric-Dipole-Allowed Transitions
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Two-body Kapitza-Dirac scattering of one-dimensional ultracold atoms
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: 8
year: '2026'
...
---
OA_place: publisher
OA_type: hybrid
_id: '21661'
abstract:
- lang: eng
text: Model checking undiscounted reachability and expected-reward properties on
Markov decision processes (MDPs) are key for the verification of systems that
act under uncertainty. Popular algorithms are policy iteration and variants of
value iteration; in tool competitions, most participants rely on the latter. These
algorithms generally need worst-case exponential time. However, the problem can
equally be formulated as a linear programme, solvable in polynomial time. In this
paper, we give a detailed overview of today’s state-of-the-art algorithms for
MDP model checking with a focus on performance and correctness. We highlight their
fundamental differences, and describe various optimizations and implementation
variants. We experimentally compare floating-point and exact-arithmetic implementations
of all algorithms on three benchmark sets using two probabilistic model checkers.
Our results show that (optimistic) value iteration is a sensible default, but
other algorithms are preferable in specific settings. This paper thereby provides
a guide for MDP verification practitioners—tool builders and users alike.
acknowledgement: "This research was funded by the European Union’s Horizon 2020 research
and innovation programme under Marie Skłodowska-Curie grant agreements 101008233
(MISSION)\r\nand 101034413 (IST-BRIDGE), by the Interreg North Sea project STORM_SAFE,
by a KI-Starter grant from the Ministerium für Kultur und Wissenschaft NRW, by NWO
VENI grant no. 639.021.754, and by NWO VIDI grant VI.Vidi.223.110 (TruSTy). Experiments
were performed with computing resources granted by RWTH Aachen University under
project rwth1632."
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Arnd
full_name: Hartmanns, Arnd
last_name: Hartmanns
- first_name: Sebastian
full_name: Junges, Sebastian
last_name: Junges
- first_name: Tim
full_name: Quatmann, Tim
last_name: Quatmann
- first_name: Maximilian
full_name: Weininger, Maximilian
id: 02ab0197-cc70-11ed-ab61-918e71f56881
last_name: Weininger
orcid: 0000-0002-0163-2152
citation:
ama: Hartmanns A, Junges S, Quatmann T, Weininger M. The revised practitioner’s
guide to MDP model checking algorithms. International Journal on Software Tools
for Technology Transfer. 2026. doi:10.1007/s10009-026-00848-y
apa: Hartmanns, A., Junges, S., Quatmann, T., & Weininger, M. (2026). The revised
practitioner’s guide to MDP model checking algorithms. International Journal
on Software Tools for Technology Transfer. Springer Nature. https://doi.org/10.1007/s10009-026-00848-y
chicago: Hartmanns, Arnd, Sebastian Junges, Tim Quatmann, and Maximilian Weininger.
“The Revised Practitioner’s Guide to MDP Model Checking Algorithms.” International
Journal on Software Tools for Technology Transfer. Springer Nature, 2026.
https://doi.org/10.1007/s10009-026-00848-y.
ieee: A. Hartmanns, S. Junges, T. Quatmann, and M. Weininger, “The revised practitioner’s
guide to MDP model checking algorithms,” International Journal on Software
Tools for Technology Transfer. Springer Nature, 2026.
ista: Hartmanns A, Junges S, Quatmann T, Weininger M. 2026. The revised practitioner’s
guide to MDP model checking algorithms. International Journal on Software Tools
for Technology Transfer.
mla: Hartmanns, Arnd, et al. “The Revised Practitioner’s Guide to MDP Model Checking
Algorithms.” International Journal on Software Tools for Technology Transfer,
Springer Nature, 2026, doi:10.1007/s10009-026-00848-y.
short: A. Hartmanns, S. Junges, T. Quatmann, M. Weininger, International Journal
on Software Tools for Technology Transfer (2026).
date_created: 2026-04-05T22:01:32Z
date_published: 2026-03-09T00:00:00Z
date_updated: 2026-04-07T09:52:54Z
day: '09'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1007/s10009-026-00848-y
ec_funded: 1
has_accepted_license: '1'
keyword:
- Quantitative model checking
- Markov decision process
- Linear programming
- Value iteration
- Policy iteration
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1007/s10009-026-00848-y
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: fc2ed2f7-9c52-11eb-aca3-c01059dda49c
call_identifier: H2020
grant_number: '101034413'
name: 'IST-BRIDGE: International postdoctoral program'
publication: International Journal on Software Tools for Technology Transfer
publication_identifier:
eissn:
- 1433-2787
issn:
- 1433-2779
publication_status: epub_ahead
publisher: Springer Nature
quality_controlled: '1'
related_material:
record:
- id: '21668'
relation: software
status: public
scopus_import: '1'
status: public
title: The revised practitioner’s guide to MDP model checking algorithms
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_place: publisher
_id: '20964'
acknowledged_ssus:
- _id: LifeSc
- _id: Bio
alternative_title:
- ISTA Master’s Thesis
article_processing_charge: No
author:
- first_name: Dmitrii
full_name: Vladimirtsev, Dmitrii
id: 60466724-5355-11ee-ae5a-fa55e8f99c3d
last_name: Vladimirtsev
citation:
ama: Vladimirtsev D. Armadillo repeat only proteins are master regulators of plant
cyclic-nucleotide gated channels. 2026. doi:10.15479/AT-ISTA-20964
apa: Vladimirtsev, D. (2026). Armadillo repeat only proteins are master regulators
of plant cyclic-nucleotide gated channels. Institute of Science and Technology
Austria. https://doi.org/10.15479/AT-ISTA-20964
chicago: Vladimirtsev, Dmitrii. “Armadillo Repeat Only Proteins Are Master Regulators
of Plant Cyclic-Nucleotide Gated Channels.” Institute of Science and Technology
Austria, 2026. https://doi.org/10.15479/AT-ISTA-20964.
ieee: D. Vladimirtsev, “Armadillo repeat only proteins are master regulators of
plant cyclic-nucleotide gated channels,” Institute of Science and Technology Austria,
2026.
ista: Vladimirtsev D. 2026. Armadillo repeat only proteins are master regulators
of plant cyclic-nucleotide gated channels. Institute of Science and Technology
Austria.
mla: Vladimirtsev, Dmitrii. Armadillo Repeat Only Proteins Are Master Regulators
of Plant Cyclic-Nucleotide Gated Channels. Institute of Science and Technology
Austria, 2026, doi:10.15479/AT-ISTA-20964.
short: D. Vladimirtsev, Armadillo Repeat Only Proteins Are Master Regulators of
Plant Cyclic-Nucleotide Gated Channels, Institute of Science and Technology Austria,
2026.
corr_author: '1'
date_created: 2026-01-09T09:22:48Z
date_published: 2026-01-14T00:00:00Z
date_updated: 2026-04-07T11:41:44Z
day: '14'
ddc:
- '570'
degree_awarded: MS
department:
- _id: GradSch
- _id: JiFr
doi: 10.15479/AT-ISTA-20964
file:
- access_level: closed
checksum: 812857b2fbe3f6113bef22fd04bccd3e
content_type: application/pdf
creator: dvladimi
date_created: 2026-01-21T14:12:13Z
date_updated: 2026-01-21T14:12:13Z
embargo: 2027-01-01
embargo_to: open_access
file_id: '21033'
file_name: 2026_Vladimirtsev_Dmitrii_Thesis.pdf
file_size: 2867531
relation: main_file
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checksum: 2b969f97f8d7461bea3d255f48c2219c
content_type: application/x-zip-compressed
creator: dvladimi
date_created: 2026-01-21T14:41:58Z
date_updated: 2026-01-28T12:38:19Z
file_id: '21034'
file_name: Source Files.zip
file_size: 25023066
relation: source_file
file_date_updated: 2026-01-28T12:38:19Z
has_accepted_license: '1'
language:
- iso: eng
month: '01'
oa_version: Published Version
page: '22'
project:
- _id: 8f347782-16d5-11f0-9cad-8c19706ee739
grant_number: '101142681'
name: Cyclic nucleotides as second messengers in plants
publication_identifier:
issn:
- 2791-4585
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '20982'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
title: Armadillo repeat only proteins are master regulators of plant cyclic-nucleotide
gated channels
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2026'
...
---
OA_place: publisher
_id: '21198'
abstract:
- lang: eng
text: "In recent years there has been a massive increase in the amount of data generated
in a\r\ndecentralized manner. Ever more powerful edge devices, such as smartphones,
have become\r\nubiquitous in most societies on earth. Through text typed, photos
taken and apps used,\r\nthese devices, which we refer to as clients, generate
enormous amounts of high quality and\r\ncomplex data. Moreover, the nature of
these devices means the data they generate is often\r\nsensitive and privacy concerns
prevent it being gathered and stored in a central location. This\r\npresents a
challenge to the modern machine learning paradigm that requires central access\r\nto
large amounts of data. Federated learning (FL) has emerged as one of the answers
to\r\nthis problem. Rather than bringing the data to the model, FL sends the model
to the data.\r\nModel training takes place on device, with periodically synchronized
updates, allowing data to\r\nremain locally stored. While this approach offers
significant privacy advantages it comes with\r\nits own set of unique challenges.
These include: data heterogeneity, the notion that different\r\ndevices generate
data in distinct ways which can negatively impact training dynamics; systems\r\nheterogeneity,
meaning that different devices may have differing hardware specifications; high\r\ncommunication
costs, which are induced by the repeated transferring of models over the\r\nnetwork
and low device computational power, which limits the use of larger models on device.\r\nIn
this thesis we present a range of methods for federated learning. We focus primarily
on\r\nthe challenge of data heterogeneity, though the methods presented are designed
to be well\r\nadapted to the other challenges of a federated setting, such as
the constraints of limited\r\ncompute and communication overhead. We first present
a method for explicitly modeling client\r\ndata heterogeneity. The approach formulates
clients as samples from a certain probability\r\ndistribution and infers the parameters
of this distribution from the available training clients.\r\nThis learned distribution
then represents the heterogeneity present among the clients and can\r\nbe sampled
from in order to create new simulated clients that are similar to the real clients
we\r\nhave observed so far. Following this we present two methods for directly
dealing with data\r\nheterogeneity through personalization. Highly heterogeneous
client data distributions can mean\r\nthat learning a single global model becomes
suboptimal, and some form of personalization of\r\nmodels to each individual client
is required. Our approaches are based around hypernetworks,\r\nwhich we use to
generate personalized model parameters without the need for additional\r\ntraining
or finetuning. In the first approach we focus on generating full parameterizations
of\r\nclient models using learned embeddings of client data and labels, with a
hypernetwork located\r\non the central server. In the second approach we address
the more challenging scenario where\r\nwe want to generate a personalized model
for a client without any label information. The\r\nhypernetwork is trained to
generate a low dimensional representation of a client’s personalized\r\nmodel
parameters, allowing it to be transferred to and run on the client devices. In
our final\r\npresented method, we change our focus and rather than aim to directly
address the challenge\r\nof data heterogeneity, we instead ensure we are unaffected
by it. This is done in the context\r\nof k-means clustering and we present a method
for federated clustering with a focus on added\r\nprivacy guarantees."
acknowledged_ssus:
- _id: ScienComp
acknowledgement: "This research was funded in part by the Austrian Science Fund (FWF)\r\n[10.55776/COE12].
Furthermore, the candidate acknowledges the support from the Scientific\r\nService
Units (SSU) of ISTA through resources provided by Scientific Computing (SciComp)."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Jonathan A
full_name: Scott, Jonathan A
id: e499926b-f6e0-11ea-865d-9c63db0031e8
last_name: Scott
citation:
ama: Scott JA. Data heterogeneity and personalization in federated learning. 2026.
doi:10.15479/AT-ISTA-21198
apa: Scott, J. A. (2026). Data heterogeneity and personalization in federated
learning. Institute of Science and Technology Austria. https://doi.org/10.15479/AT-ISTA-21198
chicago: Scott, Jonathan A. “Data Heterogeneity and Personalization in Federated
Learning.” Institute of Science and Technology Austria, 2026. https://doi.org/10.15479/AT-ISTA-21198.
ieee: J. A. Scott, “Data heterogeneity and personalization in federated learning,”
Institute of Science and Technology Austria, 2026.
ista: Scott JA. 2026. Data heterogeneity and personalization in federated learning.
Institute of Science and Technology Austria.
mla: Scott, Jonathan A. Data Heterogeneity and Personalization in Federated Learning.
Institute of Science and Technology Austria, 2026, doi:10.15479/AT-ISTA-21198.
short: J.A. Scott, Data Heterogeneity and Personalization in Federated Learning,
Institute of Science and Technology Austria, 2026.
corr_author: '1'
date_created: 2026-02-09T14:59:53Z
date_published: 2026-02-09T00:00:00Z
date_updated: 2026-04-07T11:46:11Z
day: '09'
ddc:
- '005'
degree_awarded: PhD
department:
- _id: GradSch
- _id: ChLa
doi: 10.15479/AT-ISTA-21198
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page: '158'
publication_identifier:
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- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
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relation: part_of_dissertation
status: public
- id: '17411'
relation: part_of_dissertation
status: public
- id: '18120'
relation: part_of_dissertation
status: public
- id: '21207'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Christoph
full_name: Lampert, Christoph
id: 40C20FD2-F248-11E8-B48F-1D18A9856A87
last_name: Lampert
orcid: 0000-0001-8622-7887
title: Data heterogeneity and personalization in federated learning
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2026'
...
---
OA_place: publisher
_id: '21021'
abstract:
- lang: eng
text: This thesis examines how geometry and topology intersect in the representation,
transformation, and analysis of complex shapes. It considers how continuous manifolds
relate to their discrete analogues, how topological structures evolve in persistence
vineyards, and how tools from topological data analysis can illuminate problems
in mathematical physics. Central to this exploration is the question of how structure,
both geometric and topological, persists or changes under approximation, sampling,
or deformation. The work develops new approaches to skeletal and grid-based representations
of surfaces, reveals the full expressive capacity of persistence vineyards, and
applies topological methods to the longstanding problem of equilibria in electrostatic
fields. These threads braid together into a broader understanding of how topology
and geometry inform one another across theory, computation, and application.
acknowledged_ssus:
- _id: M-Shop
- _id: ScienComp
acknowledgement: "The research presented in this thesis was funded by the DFG Collaborative
Research\r\nCenter TRR 109, ‘Discretization in Geometry and Dynamics’.\r\n"
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Christopher D
full_name: Fillmore, Christopher D
id: 35638A5C-AAC7-11E9-B0BF-5503E6697425
last_name: Fillmore
citation:
ama: Fillmore CD. Braiding geometry and topology to study shapes and data. 2026.
doi:10.15479/AT-ISTA-21021
apa: Fillmore, C. D. (2026). Braiding geometry and topology to study shapes and
data. Institute of Science and Technology Austria. https://doi.org/10.15479/AT-ISTA-21021
chicago: Fillmore, Christopher D. “Braiding Geometry and Topology to Study Shapes
and Data.” Institute of Science and Technology Austria, 2026. https://doi.org/10.15479/AT-ISTA-21021.
ieee: C. D. Fillmore, “Braiding geometry and topology to study shapes and data,”
Institute of Science and Technology Austria, 2026.
ista: Fillmore CD. 2026. Braiding geometry and topology to study shapes and data.
Institute of Science and Technology Austria.
mla: Fillmore, Christopher D. Braiding Geometry and Topology to Study Shapes
and Data. Institute of Science and Technology Austria, 2026, doi:10.15479/AT-ISTA-21021.
short: C.D. Fillmore, Braiding Geometry and Topology to Study Shapes and Data, Institute
of Science and Technology Austria, 2026.
corr_author: '1'
date_created: 2026-01-20T21:38:40Z
date_published: 2026-01-21T00:00:00Z
date_updated: 2026-04-07T11:42:49Z
day: '21'
ddc:
- '514'
- '516'
degree_awarded: PhD
department:
- _id: GradSch
- _id: HeEd
- _id: UlWa
doi: 10.15479/AT-ISTA-21021
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creator: cfillmor
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creator: cfillmor
date_created: 2026-01-26T19:46:20Z
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file_name: Thesis.zip
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language:
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month: '01'
oa: 1
oa_version: Published Version
page: '122'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '20260'
relation: part_of_dissertation
status: public
- id: '21050'
relation: part_of_dissertation
status: public
- id: '21051'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Herbert
full_name: Edelsbrunner, Herbert
id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
last_name: Edelsbrunner
orcid: 0000-0002-9823-6833
- first_name: Uli
full_name: Wagner, Uli
id: 36690CA2-F248-11E8-B48F-1D18A9856A87
last_name: Wagner
orcid: 0000-0002-1494-0568
title: Braiding geometry and topology to study shapes and data
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: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2026'
...
---
OA_place: repository
_id: '21051'
abstract:
- lang: eng
text: 'In this work, we introduce and study what we believe is an intriguing and,
to the best of our knowledge, previously unknown connection between two areas
in computational topology, topological data analysis (TDA) and knot theory. Given
a function from a topological space to $\mathbb{R}$, TDA provides tools to simplify
and study the importance of topological features: in particular, the $l^{th}$-dimensional
persistence diagram encodes the $l$-homology in the sublevel set as the function
value increases as a set of points in the plane. Given a continuous one-parameter
family of such functions, we can combine the persistence diagrams into an object
known as a vineyard, which track the evolution of points in the persistence diagram.
If we further restrict that family of functions to be periodic, we identify the
two ends of the vineyard, yielding a closed vineyard. This allows the study of
monodromy, which in this context means that following the family of functions
for a period permutes the set of points in a non-trivial way. In this work, given
a link and value $l$, we construct a topological space and periodic family of
functions such that the closed $l$-vineyard contains this link. This shows that
vineyards are topologically as rich as one could possibly hope. Importantly, it
has at least two immediate consequences: First, monodromy of any periodicity can
occur in a $l$-vineyard, answering a variant of a question by [Arya et al 2024].
To exhibit this, we also reformulate monodromy in a more geometric way, which
may be of interest in itself. Second, distinguishing vineyards is likely to be
difficult given the known difficulty of knot and link recognition, which have
strong connections to many NP-hard problems.'
article_processing_charge: No
arxiv: 1
author:
- first_name: Erin
full_name: ' Chambers, Erin'
last_name: ' Chambers'
- first_name: Christopher D
full_name: Fillmore, Christopher D
id: 35638A5C-AAC7-11E9-B0BF-5503E6697425
last_name: Fillmore
- first_name: Elizabeth R
full_name: Stephenson, Elizabeth R
id: 2D04F932-F248-11E8-B48F-1D18A9856A87
last_name: Stephenson
orcid: 0000-0002-6862-208X
- first_name: Mathijs
full_name: Wintraecken, Mathijs
id: 307CFBC8-F248-11E8-B48F-1D18A9856A87
last_name: Wintraecken
orcid: 0000-0002-7472-2220
citation:
ama: Chambers E, Fillmore CD, Stephenson ER, Wintraecken M. Braiding vineyards.
arXiv. doi:10.48550/ARXIV.2504.11203
apa: Chambers, E., Fillmore, C. D., Stephenson, E. R., & Wintraecken, M. (n.d.).
Braiding vineyards. arXiv. https://doi.org/10.48550/ARXIV.2504.11203
chicago: Chambers, Erin, Christopher D Fillmore, Elizabeth R Stephenson, and Mathijs
Wintraecken. “Braiding Vineyards.” ArXiv, n.d. https://doi.org/10.48550/ARXIV.2504.11203.
ieee: E. Chambers, C. D. Fillmore, E. R. Stephenson, and M. Wintraecken, “Braiding
vineyards,” arXiv. .
ista: Chambers E, Fillmore CD, Stephenson ER, Wintraecken M. Braiding vineyards.
arXiv, 10.48550/ARXIV.2504.11203.
mla: Chambers, Erin, et al. “Braiding Vineyards.” ArXiv, doi:10.48550/ARXIV.2504.11203.
short: E. Chambers, C.D. Fillmore, E.R. Stephenson, M. Wintraecken, ArXiv (n.d.).
corr_author: '1'
date_created: 2026-01-27T14:41:44Z
date_published: 2026-01-02T00:00:00Z
date_updated: 2026-04-07T11:42:48Z
day: '02'
department:
- _id: HeEd
doi: 10.48550/ARXIV.2504.11203
external_id:
arxiv:
- '2504.11203'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2504.11203
month: '01'
oa: 1
oa_version: Preprint
publication: arXiv
publication_status: draft
related_material:
record:
- id: '21056'
relation: later_version
status: public
- id: '21021'
relation: dissertation_contains
status: public
status: public
title: Braiding vineyards
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: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2026'
...
---
OA_place: repository
OA_type: green
_id: '21726'
abstract:
- lang: eng
text: Quantum control of the many-body wavefunction is a central challenge in quantum
materials research, as it could yield a precise control knob to manipulate emergent
phenomena. Floquet engineering, the coherent dressing of quantum states with periodic
non-resonant optical fields, has become an important strategy for quantum control.
Most applications to solid-state systems have targeted weakly interacting or single-ion
states, leaving the manipulation of many-body wavefunctions largely unexplored.
Here we use Floquet engineering to achieve quantum control of a strongly correlated
Hubbard exciton in the one-dimensional Mott insulator Sr2CuO3. A non-resonant
mid-infrared optical field coherently dresses the exciton wavefunction, driving
its rotation between bright and dark states. We use resonant third-harmonic generation
to quantify ultrafast π/2 rotations on the Bloch sphere spanned by these exciton
states. Our work advances the quest towards programmable control of correlated
states and exciton-based quantum sensing.
acknowledgement: We thank K. Burch, M. Buzzi, P. Cappellaro, A. Cavalleri, E. Demler,
M. Eckstein, T. Giamarchi, D. Hsieh, H. Okamoto, D. Reis, T. Tohyama, P. Werner
and A. Yacoby for insightful discussions. We thank B. Baxley for assistance with
graphics. This work was primarily supported by the US Department of Energy, Office
of Basic Energy Sciences, Early Career Award Program, under award no. DE-SC0022883
(D.R.B., F.G., T.M. and M.M.) and award no. DE-SC0024494 (D.C. and M.C.). D.C. and
P.B.M.D.O. acknowledge funding from the NSF GRFP under grant nos. DGE-1845298 and
DGE 2140743, respectively. The work performed at Brookhaven National Laboratory
was supported by the US Department of Energy, Division of Materials Science, under
contract no. DE-SC0012704. We acknowledge funding from the Deutsche Forschungsgemeinschaft
(DFG, German Research Foundation) – 531215165 (Research Unit “OPTIMAL’). This work
was supported by the Cluster of Excellence ‘Advanced Imaging of Matter’ (AIM) and
the Max Planck-New York City Center for Non-Equilibrium Quantum Phenomena. The Flatiron
Institute is a division of the Simons Foundation. Simulations were performed with
computing resources granted by RWTH Aachen University under projects rwth0752 and
rwth1258. We acknowledge computing time on the supercomputer JURECA52 at Forschungszentrum
Jülich under the project ID enhancerg.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Denitsa Rangelova
full_name: Baykusheva, Denitsa Rangelova
id: 71b4d059-2a03-11ee-914d-dfa3beed6530
last_name: Baykusheva
orcid: 0000-0002-7438-1139
- first_name: Deven
full_name: Carmichael, Deven
last_name: Carmichael
- first_name: Clara S.
full_name: Weber, Clara S.
last_name: Weber
- first_name: I. Te
full_name: Lu, I. Te
last_name: Lu
- first_name: Filippo
full_name: Glerean, Filippo
last_name: Glerean
- first_name: Tepie
full_name: Meng, Tepie
last_name: Meng
- first_name: Pedro B.M.
full_name: De Oliveira, Pedro B.M.
last_name: De Oliveira
- first_name: Christopher C.
full_name: Homes, Christopher C.
last_name: Homes
- first_name: Igor A.
full_name: Zaliznyak, Igor A.
last_name: Zaliznyak
- first_name: G. D.
full_name: Gu, G. D.
last_name: Gu
- first_name: Mark P.M.
full_name: Dean, Mark P.M.
last_name: Dean
- first_name: Angel
full_name: Rubio, Angel
last_name: Rubio
- first_name: Dante M.
full_name: Kennes, Dante M.
last_name: Kennes
- first_name: Martin
full_name: Claassen, Martin
last_name: Claassen
- first_name: Matteo
full_name: Mitrano, Matteo
last_name: Mitrano
citation:
ama: Baykusheva DR, Carmichael D, Weber CS, et al. Quantum control of Hubbard excitons.
Nature Materials. 2026. doi:10.1038/s41563-026-02517-6
apa: Baykusheva, D. R., Carmichael, D., Weber, C. S., Lu, I. T., Glerean, F., Meng,
T., … Mitrano, M. (2026). Quantum control of Hubbard excitons. Nature Materials.
Springer Nature. https://doi.org/10.1038/s41563-026-02517-6
chicago: Baykusheva, Denitsa Rangelova, Deven Carmichael, Clara S. Weber, I. Te
Lu, Filippo Glerean, Tepie Meng, Pedro B.M. De Oliveira, et al. “Quantum Control
of Hubbard Excitons.” Nature Materials. Springer Nature, 2026. https://doi.org/10.1038/s41563-026-02517-6.
ieee: D. R. Baykusheva et al., “Quantum control of Hubbard excitons,” Nature
Materials. Springer Nature, 2026.
ista: Baykusheva DR, Carmichael D, Weber CS, Lu IT, Glerean F, Meng T, De Oliveira
PBM, Homes CC, Zaliznyak IA, Gu GD, Dean MPM, Rubio A, Kennes DM, Claassen M,
Mitrano M. 2026. Quantum control of Hubbard excitons. Nature Materials.
mla: Baykusheva, Denitsa Rangelova, et al. “Quantum Control of Hubbard Excitons.”
Nature Materials, Springer Nature, 2026, doi:10.1038/s41563-026-02517-6.
short: D.R. Baykusheva, D. Carmichael, C.S. Weber, I.T. Lu, F. Glerean, T. Meng,
P.B.M. De Oliveira, C.C. Homes, I.A. Zaliznyak, G.D. Gu, M.P.M. Dean, A. Rubio,
D.M. Kennes, M. Claassen, M. Mitrano, Nature Materials (2026).
corr_author: '1'
date_created: 2026-04-12T22:01:53Z
date_published: 2026-03-09T00:00:00Z
date_updated: 2026-04-13T07:29:34Z
day: '09'
department:
- _id: DeBa
doi: 10.1038/s41563-026-02517-6
external_id:
arxiv:
- '2601.20695 '
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2601.20695
month: '03'
oa: 1
oa_version: Preprint
publication: Nature Materials
publication_identifier:
eissn:
- 1476-4660
issn:
- 1476-1122
publication_status: epub_ahead
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Quantum control of Hubbard excitons
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2026'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
PlanS_conform: '1'
_id: '21725'
abstract:
- lang: eng
text: "The initial–final mass relation (IFMR) links a star’s birth mass to the mass
of its white dwarf (WD) remnant, providing key constraints on stellar evolution.
Open clusters offer the most straightforward way to empirically determine the
IFMR, as their well-defined ages allow for direct progenitor lifetime estimates.
We construct the most comprehensive open cluster WD IFMR to date by combining
new spectroscopy of 22 WDs with an extensive literature review of WDs with strong
cluster associations. To minimize systematics, we restrict our analysis to spectroscopically
confirmed hydrogen-atmosphere (DA) WDs consistent with single-stellar origins.
We separately analyze a subset with reliable Gaia-based astrometric membership
assessments, as well as a full sample that adds WDs with strong cluster associations
whose membership cannot be reliably assessed with Gaia. The Gaia-based sample
includes 69 spectroscopically confirmed DA WDs, more than doubling the sample
size of previous Gaia-based open cluster IFMRs. The full sample, which includes
53 additional literature WDs,\r\nincreases the total number of cluster WDs by
over 50% relative to earlier works. We provide functional forms for both the Gaia-based
and full-sample IFMRs. The Gaia-based result useful for Mi � 2.67 M⊙ is Mf = [0.179
0.100H (Mi 3.84 M )] × (Mi 3.84 M ) + 0.628 M , where H(x) is the Heaviside step
function. Comparing our IFMR to recent literature, we identify significant deviations
from best-fit IFMRs derived from both Gaia-based volume-limited samples of field
WDs and double WD binaries, with the largest discrepancy occurring for initial
masses of about 5 M⊙."
acknowledgement: "The authors would like to thank the anonymous referee for their
constructive feedback, which helped improve the clarify of the manuscript. This
work was supported in part by the Natural Sciences and Engineering Research Council
of Canada Discovery grants Nos. DG-RGPIN-2022-03051 and DG-RGPIN-2023-04486. This
research received funding from the European Research Council under the European
Union’s Horizon 2020 research and innovation program number 101002408 (MOS100PC).
This work includes results based on observations obtained at the international Gemini
Observatory, a program of NSF’s NOIRLab, which is managed by the Association of
Universities for Research in Astronomy (AURA) under a cooperative agreement with
the National Science Foundation on behalf of the Gemini Observatory partnership:
the National Science Foundation (United States), National Research Council (Canada),
Agencia Nacional de Investigación y Desarrollo (Chile), Ministerio de Ciencia, Tecnología
e Innovación (Argentina), Ministério da Ciência, Tecnologia, Inovações e Comunicações
(Brazil), and Korea Astronomy and Space Science Institute (Republic of Korea). This
work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia),
processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium).
Funding for the DPAC has been provided by national institutions, in particular the
institutions participating in the Gaia Multilateral Agreement. Some of the data
presented herein were obtained at the W. M. Keck Observatory, which is operated
as a scientific partnership among the California Institute of Technology, the University
of California, and the National Aeronautics and Space Administration. The Observatory
was made possible by the generous financial support of the W. M. Keck Foundation.
Gemini spectra were processed using the DRAGONS package (K. Labrie et al. 2023).
LRIS spectra were reduced using the Lpipe pipeline (D. A. Perley 2019).\r\n\r\nFacilities:
Gaia - (DR2 & DR3), Gemini:Gillett - Gillett Gemini North Telescope (GMOS-N), Gemini:South
- Gemini South Telescope (GMOS-S), Keck:I - KECK I Telescope (LRIS).\r\n\r\nSoftware:
Astropy (Astropy Collaboration et al. 2013,2018, 2022), emcee (D. Foreman-Mackey
et al. 2013)."
article_number: '69'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: David R.
full_name: Miller, David R.
last_name: Miller
- first_name: Ilaria
full_name: Caiazzo, Ilaria
id: 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d
last_name: Caiazzo
orcid: 0000-0002-4770-5388
- first_name: Jeremy
full_name: Heyl, Jeremy
last_name: Heyl
- first_name: Harvey B.
full_name: Richer, Harvey B.
last_name: Richer
- first_name: Mark A.
full_name: Hollands, Mark A.
last_name: Hollands
- first_name: Pier Emmanuel
full_name: Tremblay, Pier Emmanuel
last_name: Tremblay
- first_name: Kareem
full_name: El-Badry, Kareem
last_name: El-Badry
- first_name: Antonio C.
full_name: Rodriguez, Antonio C.
last_name: Rodriguez
- first_name: Zachary P.
full_name: Vanderbosch, Zachary P.
last_name: Vanderbosch
citation:
ama: Miller DR, Caiazzo I, Heyl J, et al. The White Dwarf initial–final mass relation
from open clusters in Gaia DR3. The Astrophysical Journal. 2026;996(1).
doi:10.3847/1538-4357/ae18c8
apa: Miller, D. R., Caiazzo, I., Heyl, J., Richer, H. B., Hollands, M. A., Tremblay,
P. E., … Vanderbosch, Z. P. (2026). The White Dwarf initial–final mass relation
from open clusters in Gaia DR3. The Astrophysical Journal. IOP Publishing.
https://doi.org/10.3847/1538-4357/ae18c8
chicago: Miller, David R., Ilaria Caiazzo, Jeremy Heyl, Harvey B. Richer, Mark A.
Hollands, Pier Emmanuel Tremblay, Kareem El-Badry, Antonio C. Rodriguez, and Zachary
P. Vanderbosch. “The White Dwarf Initial–Final Mass Relation from Open Clusters
in Gaia DR3.” The Astrophysical Journal. IOP Publishing, 2026. https://doi.org/10.3847/1538-4357/ae18c8.
ieee: D. R. Miller et al., “The White Dwarf initial–final mass relation from
open clusters in Gaia DR3,” The Astrophysical Journal, vol. 996, no. 1.
IOP Publishing, 2026.
ista: Miller DR, Caiazzo I, Heyl J, Richer HB, Hollands MA, Tremblay PE, El-Badry
K, Rodriguez AC, Vanderbosch ZP. 2026. The White Dwarf initial–final mass relation
from open clusters in Gaia DR3. The Astrophysical Journal. 996(1), 69.
mla: Miller, David R., et al. “The White Dwarf Initial–Final Mass Relation from
Open Clusters in Gaia DR3.” The Astrophysical Journal, vol. 996, no. 1,
69, IOP Publishing, 2026, doi:10.3847/1538-4357/ae18c8.
short: D.R. Miller, I. Caiazzo, J. Heyl, H.B. Richer, M.A. Hollands, P.E. Tremblay,
K. El-Badry, A.C. Rodriguez, Z.P. Vanderbosch, The Astrophysical Journal 996 (2026).
date_created: 2026-04-12T22:01:52Z
date_published: 2026-01-01T00:00:00Z
date_updated: 2026-04-13T08:39:39Z
day: '01'
ddc:
- '520'
department:
- _id: IlCa
doi: 10.3847/1538-4357/ae18c8
external_id:
arxiv:
- '2510.24877'
file:
- access_level: open_access
checksum: 65a8237a519188af83b6dc4d47ad85fa
content_type: application/pdf
creator: dernst
date_created: 2026-04-13T08:36:50Z
date_updated: 2026-04-13T08:36:50Z
file_id: '21733'
file_name: 2026_AstrophysicalJournal_Miller.pdf
file_size: 19310053
relation: main_file
success: 1
file_date_updated: 2026-04-13T08:36:50Z
has_accepted_license: '1'
intvolume: ' 996'
issue: '1'
keyword:
- White dwarf stars
- Open star clusters
- Compact objects
- Stellar evolution
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
publication: The Astrophysical Journal
publication_identifier:
eissn:
- 1538-4357
issn:
- 0004-637X
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: The White Dwarf initial–final mass relation from open clusters in Gaia DR3
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'
...
---
OA_place: repository
OA_type: green
_id: '21699'
abstract:
- lang: eng
text: 'Recent research in nanophotonics for scintillation-based imaging has demonstrated
promising improvements in scintillator performance. In parallel, advances in nanophotonics
have enabled wavefront control through metasurfaces, a capability that has transformed
fields such as microscopy by allowing tailored control of optical propagation.
This naturally raises the following question, which we address in this perspective:
can wavefront-control strategies be leveraged to improve scintillation-based imaging?
To answer this question, we explore nanophotonic- and metasurface-enabled wavefront
control in scintillators to mitigate image blurring arising from their intrinsically
diffuse light emission. While depth-of-field extension in scintillation faces
fundamental limitations absent in microscopy, this approach reveals promising
avenues, including stacked scintillators, selective spatial-frequency enhancement,
and X-ray energy-dependent imaging. These results clarify the key distinctions
in adapting wavefront engineering to scintillation and its potential to enable
tailored detection strategies.'
article_number: '2601.09830'
article_processing_charge: No
arxiv: 1
author:
- first_name: Joshua
full_name: Chen, Joshua
last_name: Chen
- first_name: Sachin
full_name: Vaidya, Sachin
last_name: Vaidya
- first_name: Simo
full_name: Pajovic, Simo
last_name: Pajovic
- first_name: Seou
full_name: Choi, Seou
last_name: Choi
- first_name: William
full_name: Michaels, William
last_name: Michaels
- first_name: Louis Martin-Monier
full_name: Louis Martin-Monier, Louis Martin-Monier
last_name: Louis Martin-Monier
- first_name: Juejun
full_name: Hu, Juejun
last_name: Hu
- first_name: Carol
full_name: Cogswell, Carol
last_name: Cogswell
- first_name: Charles
full_name: Roques-Carmes, Charles
id: e2e68fc9-6505-11ef-a541-eb4e72cc3e82
last_name: Roques-Carmes
- first_name: Marin
full_name: Soljačić, Marin
last_name: Soljačić
citation:
ama: Chen J, Vaidya S, Pajovic S, et al. Wavefront engineering for scintillation-based
imaging. arXiv. doi:10.48550/arXiv.2601.09830
apa: Chen, J., Vaidya, S., Pajovic, S., Choi, S., Michaels, W., Louis Martin-Monier,
L. M.-M., … Soljačić, M. (n.d.). Wavefront engineering for scintillation-based
imaging. arXiv. https://doi.org/10.48550/arXiv.2601.09830
chicago: Chen, Joshua, Sachin Vaidya, Simo Pajovic, Seou Choi, William Michaels,
Louis Martin-Monier Louis Martin-Monier, Juejun Hu, Carol Cogswell, Charles Roques-Carmes,
and Marin Soljačić. “Wavefront Engineering for Scintillation-Based Imaging.” ArXiv,
n.d. https://doi.org/10.48550/arXiv.2601.09830.
ieee: J. Chen et al., “Wavefront engineering for scintillation-based imaging,”
arXiv. .
ista: Chen J, Vaidya S, Pajovic S, Choi S, Michaels W, Louis Martin-Monier LM-M,
Hu J, Cogswell C, Roques-Carmes C, Soljačić M. Wavefront engineering for scintillation-based
imaging. arXiv, 2601.09830.
mla: Chen, Joshua, et al. “Wavefront Engineering for Scintillation-Based Imaging.”
ArXiv, 2601.09830, doi:10.48550/arXiv.2601.09830.
short: J. Chen, S. Vaidya, S. Pajovic, S. Choi, W. Michaels, L.M.-M. Louis Martin-Monier,
J. Hu, C. Cogswell, C. Roques-Carmes, M. Soljačić, ArXiv (n.d.).
date_created: 2026-04-09T09:10:41Z
date_published: 2026-01-14T00:00:00Z
date_updated: 2026-04-13T11:26:08Z
day: '14'
doi: 10.48550/arXiv.2601.09830
extern: '1'
external_id:
arxiv:
- '2601.09830'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.2601.09830'
month: '01'
oa: 1
oa_version: Preprint
publication: arXiv
publication_status: submitted
scopus_import: '1'
status: public
title: Wavefront engineering for scintillation-based imaging
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2026'
...
---
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
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
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:
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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'
...