---
_id: '10628'
abstract:
- lang: eng
text: The surface states of 3D topological insulators in general have negligible
quantum oscillations (QOs) when the chemical potential is tuned to the Dirac points.
In contrast, we find that topological Kondo insulators (TKIs) can support surface
states with an arbitrarily large Fermi surface (FS) when the chemical potential
is pinned to the Dirac point. We illustrate that these FSs give rise to finite-frequency
QOs, which can become comparable to the extremal area of the unhybridized bulk
bands. We show that this occurs when the crystal symmetry is lowered from cubic
to tetragonal in a minimal two-orbital model. We label such surface modes as 'shadow
surface states'. Moreover, we show that the sufficient next-nearest neighbor out-of-plane
hybridization leading to shadow surface states can be self-consistently stabilized
for tetragonal TKIs. Consequently, shadow surface states provide an important
example of high-frequency QOs beyond the context of cubic TKIs.
acknowledgement: PG acknowledges support from National Science Foundation Awards No.
DMR-1824265 for this work. AG acknowledges support from the European Union's Horizon
2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement
No. 754411. EMN is supported by ASU startup grant. OE is in part supported by NSF-DMR-1904716.
article_number: '123042'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Emilian M.
full_name: Nica, Emilian M.
last_name: Nica
- first_name: Onur
full_name: Erten, Onur
last_name: Erten
- first_name: Pouyan
full_name: Ghaemi, Pouyan
last_name: Ghaemi
citation:
ama: Ghazaryan A, Nica EM, Erten O, Ghaemi P. Shadow surface states in topological
Kondo insulators. New Journal of Physics. 2021;23(12). doi:10.1088/1367-2630/ac4124
apa: Ghazaryan, A., Nica, E. M., Erten, O., & Ghaemi, P. (2021). Shadow surface
states in topological Kondo insulators. New Journal of Physics. IOP Publishing.
https://doi.org/10.1088/1367-2630/ac4124
chicago: Ghazaryan, Areg, Emilian M. Nica, Onur Erten, and Pouyan Ghaemi. “Shadow
Surface States in Topological Kondo Insulators.” New Journal of Physics.
IOP Publishing, 2021. https://doi.org/10.1088/1367-2630/ac4124.
ieee: A. Ghazaryan, E. M. Nica, O. Erten, and P. Ghaemi, “Shadow surface states
in topological Kondo insulators,” New Journal of Physics, vol. 23, no.
12. IOP Publishing, 2021.
ista: Ghazaryan A, Nica EM, Erten O, Ghaemi P. 2021. Shadow surface states in topological
Kondo insulators. New Journal of Physics. 23(12), 123042.
mla: Ghazaryan, Areg, et al. “Shadow Surface States in Topological Kondo Insulators.”
New Journal of Physics, vol. 23, no. 12, 123042, IOP Publishing, 2021,
doi:10.1088/1367-2630/ac4124.
short: A. Ghazaryan, E.M. Nica, O. Erten, P. Ghaemi, New Journal of Physics 23 (2021).
corr_author: '1'
date_created: 2022-01-16T23:01:28Z
date_published: 2021-12-23T00:00:00Z
date_updated: 2025-04-14T07:43:48Z
day: '23'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1088/1367-2630/ac4124
ec_funded: 1
external_id:
arxiv:
- '2012.11625'
isi:
- '000734063700001'
file:
- access_level: open_access
checksum: 0c3cb6816242fa8afd1cc87a5fe77821
content_type: application/pdf
creator: cchlebak
date_created: 2022-01-17T10:01:58Z
date_updated: 2022-01-17T10:01:58Z
file_id: '10632'
file_name: 2021_NewJourPhys_Ghazaryan.pdf
file_size: 2533102
relation: main_file
success: 1
file_date_updated: 2022-01-17T10:01:58Z
has_accepted_license: '1'
intvolume: ' 23'
isi: 1
issue: '12'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '12'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: New Journal of Physics
publication_identifier:
issn:
- 1367-2630
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Shadow surface states in topological Kondo insulators
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: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 23
year: '2021'
...
---
_id: '10629'
abstract:
- lang: eng
text: "Product graphs arise naturally in formal verification and program analysis.
For example, the analysis of two concurrent threads requires the product of two
component control-flow graphs, and for language inclusion of deterministic automata
the product of two automata is constructed. In many cases, the component graphs
have constant treewidth, e.g., when the input contains control-flow graphs of
programs. We consider the algorithmic analysis of products of two constant-treewidth
graphs with respect to three classic specification languages, namely, (a) algebraic
properties, (b) mean-payoff properties, and (c) initial credit for energy properties.\r\nOur
main contributions are as follows. Consider a graph G that is the product of two
constant-treewidth graphs of size n each. First, given an idempotent semiring,
we present an algorithm that computes the semiring transitive closure of G in
time Õ(n⁴). Since the output has size Θ(n⁴), our algorithm is optimal (up to
polylog factors). Second, given a mean-payoff objective, we present an O(n³)-time
algorithm for deciding whether the value of a starting state is non-negative,
improving the previously known O(n⁴) bound. Third, given an initial credit for
energy objective, we present an O(n⁵)-time algorithm for computing the minimum
initial credit for all nodes of G, improving the previously known O(n⁸) bound.
At the heart of our approach lies an algorithm for the efficient construction
of strongly-balanced tree decompositions of constant-treewidth graphs. Given a
constant-treewidth graph G' of n nodes and a positive integer λ, our algorithm
constructs a binary tree decomposition of G' of width O(λ) with the property that
the size of each subtree decreases geometrically with rate (1/2 + 2^{-λ})."
alternative_title:
- LIPIcs
article_number: '42'
article_processing_charge: No
author:
- first_name: Krishnendu
full_name: Chatterjee, Krishnendu
id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-4561-241X
- first_name: Rasmus
full_name: Ibsen-Jensen, Rasmus
id: 3B699956-F248-11E8-B48F-1D18A9856A87
last_name: Ibsen-Jensen
orcid: 0000-0003-4783-0389
- first_name: Andreas
full_name: Pavlogiannis, Andreas
id: 49704004-F248-11E8-B48F-1D18A9856A87
last_name: Pavlogiannis
orcid: 0000-0002-8943-0722
citation:
ama: 'Chatterjee K, Ibsen-Jensen R, Pavlogiannis A. Quantitative verification on
product graphs of small treewidth. In: 41st IARCS Annual Conference on Foundations
of Software Technology and Theoretical Computer Science. Vol 213. Schloss
Dagstuhl - Leibniz-Zentrum für Informatik; 2021. doi:10.4230/LIPIcs.FSTTCS.2021.42'
apa: 'Chatterjee, K., Ibsen-Jensen, R., & Pavlogiannis, A. (2021). Quantitative
verification on product graphs of small treewidth. In 41st IARCS Annual Conference
on Foundations of Software Technology and Theoretical Computer Science (Vol.
213). Virtual: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.FSTTCS.2021.42'
chicago: Chatterjee, Krishnendu, Rasmus Ibsen-Jensen, and Andreas Pavlogiannis.
“Quantitative Verification on Product Graphs of Small Treewidth.” In 41st IARCS
Annual Conference on Foundations of Software Technology and Theoretical Computer
Science, Vol. 213. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2021.
https://doi.org/10.4230/LIPIcs.FSTTCS.2021.42.
ieee: K. Chatterjee, R. Ibsen-Jensen, and A. Pavlogiannis, “Quantitative verification
on product graphs of small treewidth,” in 41st IARCS Annual Conference on Foundations
of Software Technology and Theoretical Computer Science, Virtual, 2021, vol.
213.
ista: 'Chatterjee K, Ibsen-Jensen R, Pavlogiannis A. 2021. Quantitative verification
on product graphs of small treewidth. 41st IARCS Annual Conference on Foundations
of Software Technology and Theoretical Computer Science. FSTTCS: Foundations of
Software Technology and Theoretical Computer Science, LIPIcs, vol. 213, 42.'
mla: Chatterjee, Krishnendu, et al. “Quantitative Verification on Product Graphs
of Small Treewidth.” 41st IARCS Annual Conference on Foundations of Software
Technology and Theoretical Computer Science, vol. 213, 42, Schloss Dagstuhl
- Leibniz-Zentrum für Informatik, 2021, doi:10.4230/LIPIcs.FSTTCS.2021.42.
short: K. Chatterjee, R. Ibsen-Jensen, A. Pavlogiannis, in:, 41st IARCS Annual Conference
on Foundations of Software Technology and Theoretical Computer Science, Schloss
Dagstuhl - Leibniz-Zentrum für Informatik, 2021.
conference:
end_date: 2021-12-17
location: Virtual
name: 'FSTTCS: Foundations of Software Technology and Theoretical Computer Science'
start_date: 2021-12-15
corr_author: '1'
date_created: 2022-01-16T23:01:28Z
date_published: 2021-11-29T00:00:00Z
date_updated: 2024-10-09T21:01:23Z
day: '29'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.4230/LIPIcs.FSTTCS.2021.42
file:
- access_level: open_access
checksum: 71141acdeffa9056f24d6dbef952d254
content_type: application/pdf
creator: cchlebak
date_created: 2022-01-17T10:36:08Z
date_updated: 2022-01-17T10:36:08Z
file_id: '10633'
file_name: 2021_LIPIcs_Chatterjee.pdf
file_size: 891566
relation: main_file
success: 1
file_date_updated: 2022-01-17T10:36:08Z
has_accepted_license: '1'
intvolume: ' 213'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
publication: 41st IARCS Annual Conference on Foundations of Software Technology and
Theoretical Computer Science
publication_identifier:
isbn:
- 978-3-9597-7215-0
issn:
- 1868-8969
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
quality_controlled: '1'
scopus_import: '1'
status: public
title: Quantitative verification on product graphs of small treewidth
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: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 213
year: '2021'
...
---
_id: '10630'
abstract:
- lang: eng
text: In the Intersection Non-emptiness problem, we are given a list of finite automata
A_1, A_2,… , A_m over a common alphabet Σ as input, and the goal is to determine
whether some string w ∈ Σ^* lies in the intersection of the languages accepted
by the automata in the list. We analyze the complexity of the Intersection Non-emptiness
problem under the promise that all input automata accept a language in some level
of the dot-depth hierarchy, or some level of the Straubing-Thérien hierarchy.
Automata accepting languages from the lowest levels of these hierarchies arise
naturally in the context of model checking. We identify a dichotomy in the dot-depth
hierarchy by showing that the problem is already NP-complete when all input automata
accept languages of the levels B_0 or B_{1/2} and already PSPACE-hard when all
automata accept a language from the level B_1. Conversely, we identify a tetrachotomy
in the Straubing-Thérien hierarchy. More precisely, we show that the problem is
in AC^0 when restricted to level L_0; complete for L or NL, depending on the input
representation, when restricted to languages in the level L_{1/2}; NP-complete
when the input is given as DFAs accepting a language in L_1 or L_{3/2}; and finally,
PSPACE-complete when the input automata accept languages in level L_2 or higher.
Moreover, we show that the proof technique used to show containment in NP for
DFAs accepting languages in L_1 or L_{3/2} does not generalize to the context
of NFAs. To prove this, we identify a family of languages that provide an exponential
separation between the state complexity of general NFAs and that of partially
ordered NFAs. To the best of our knowledge, this is the first superpolynomial
separation between these two models of computation.
acknowledgement: "We like to thank Lukas Fleischer and Michael Wehar for our discussions.
This work started at the Schloss Dagstuhl Event 20483 Moderne Aspekte der Komplexitätstheorie
in der Automatentheorie https://www.dagstuhl.de/20483.\r\n"
alternative_title:
- LIPIcs
article_number: '34'
article_processing_charge: No
arxiv: 1
author:
- first_name: Emmanuel
full_name: Arrighi, Emmanuel
last_name: Arrighi
- first_name: Henning
full_name: Fernau, Henning
last_name: Fernau
- first_name: Stefan
full_name: Hoffmann, Stefan
last_name: Hoffmann
- first_name: Markus
full_name: Holzer, Markus
last_name: Holzer
- first_name: Ismael R
full_name: Jecker, Ismael R
id: 85D7C63E-7D5D-11E9-9C0F-98C4E5697425
last_name: Jecker
- first_name: Mateus
full_name: De Oliveira Oliveira, Mateus
last_name: De Oliveira Oliveira
- first_name: Petra
full_name: Wolf, Petra
last_name: Wolf
citation:
ama: 'Arrighi E, Fernau H, Hoffmann S, et al. On the complexity of intersection
non-emptiness for star-free language classes. In: 41st IARCS Annual Conference
on Foundations of Software Technology and Theoretical Computer Science. Vol
213. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2021. doi:10.4230/LIPIcs.FSTTCS.2021.34'
apa: 'Arrighi, E., Fernau, H., Hoffmann, S., Holzer, M., Jecker, I. R., De Oliveira
Oliveira, M., & Wolf, P. (2021). On the complexity of intersection non-emptiness
for star-free language classes. In 41st IARCS Annual Conference on Foundations
of Software Technology and Theoretical Computer Science (Vol. 213). Virtual:
Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.FSTTCS.2021.34'
chicago: Arrighi, Emmanuel, Henning Fernau, Stefan Hoffmann, Markus Holzer, Ismael
R Jecker, Mateus De Oliveira Oliveira, and Petra Wolf. “On the Complexity of Intersection
Non-Emptiness for Star-Free Language Classes.” In 41st IARCS Annual Conference
on Foundations of Software Technology and Theoretical Computer Science, Vol.
213. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2021. https://doi.org/10.4230/LIPIcs.FSTTCS.2021.34.
ieee: E. Arrighi et al., “On the complexity of intersection non-emptiness
for star-free language classes,” in 41st IARCS Annual Conference on Foundations
of Software Technology and Theoretical Computer Science, Virtual, 2021, vol.
213.
ista: 'Arrighi E, Fernau H, Hoffmann S, Holzer M, Jecker IR, De Oliveira Oliveira
M, Wolf P. 2021. On the complexity of intersection non-emptiness for star-free
language classes. 41st IARCS Annual Conference on Foundations of Software Technology
and Theoretical Computer Science. FSTTCS: Foundations of Software Technology and
Theoretical Computer Science, LIPIcs, vol. 213, 34.'
mla: Arrighi, Emmanuel, et al. “On the Complexity of Intersection Non-Emptiness
for Star-Free Language Classes.” 41st IARCS Annual Conference on Foundations
of Software Technology and Theoretical Computer Science, vol. 213, 34, Schloss
Dagstuhl - Leibniz-Zentrum für Informatik, 2021, doi:10.4230/LIPIcs.FSTTCS.2021.34.
short: E. Arrighi, H. Fernau, S. Hoffmann, M. Holzer, I.R. Jecker, M. De Oliveira
Oliveira, P. Wolf, in:, 41st IARCS Annual Conference on Foundations of Software
Technology and Theoretical Computer Science, Schloss Dagstuhl - Leibniz-Zentrum
für Informatik, 2021.
conference:
end_date: 2021-12-17
location: Virtual
name: 'FSTTCS: Foundations of Software Technology and Theoretical Computer Science'
start_date: 2021-12-15
corr_author: '1'
date_created: 2022-01-16T23:01:29Z
date_published: 2021-11-29T00:00:00Z
date_updated: 2025-05-14T10:53:59Z
day: '29'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.4230/LIPIcs.FSTTCS.2021.34
ec_funded: 1
external_id:
arxiv:
- '2110.01279'
file:
- access_level: open_access
checksum: d5a82ba893c3bc5da5914edbb3efb92b
content_type: application/pdf
creator: cchlebak
date_created: 2022-01-17T10:49:03Z
date_updated: 2022-01-17T10:49:03Z
file_id: '10634'
file_name: 2021_LIPIcs_Arrighi.pdf
file_size: 844224
relation: main_file
success: 1
file_date_updated: 2022-01-17T10:49:03Z
has_accepted_license: '1'
intvolume: ' 213'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: 41st IARCS Annual Conference on Foundations of Software Technology and
Theoretical Computer Science
publication_identifier:
isbn:
- 978-3-9597-7215-0
issn:
- 1868-8969
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
quality_controlled: '1'
scopus_import: '1'
status: public
title: On the complexity of intersection non-emptiness for star-free language classes
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: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 213
year: '2021'
...
---
_id: '10631'
abstract:
- lang: eng
text: We combine experimental and theoretical approaches to explore excited rotational
states of molecules embedded in helium nanodroplets using CS2 and I2 as examples.
Laser-induced nonadiabatic molecular alignment is employed to measure spectral
lines for rotational states extending beyond those initially populated at the
0.37 K droplet temperature. We construct a simple quantum-mechanical model, based
on a linear rotor coupled to a single-mode bosonic bath, to determine the rotational
energy structure in its entirety. The calculated and measured spectral lines are
in good agreement. We show that the effect of the surrounding superfluid on molecular
rotation can be rationalized by a single quantity, the angular momentum, transferred
from the molecule to the droplet.
acknowledgement: I.C. acknowledges the support by the European Union’s Horizon 2020
research and innovation programme under the Marie Sklodowska-Curie Grant Agreement
No. 665385. G.B. acknowledges support from the Austrian Science Fund (FWF), under
project No. M2461-N27. M.L. acknowledges support by the Austrian Science Fund (FWF),
under project No. P29902-N27, and by the European Research Council (ERC) Starting
Grant No. 801770 (ANGULON). H.S acknowledges support from the European Research
Council-AdG (Project No. 320459, DropletControl) and from The Villum Foundation
through a Villum Investigator grant no. 25886.
article_number: L061303
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Igor
full_name: Cherepanov, Igor
id: 339C7E5A-F248-11E8-B48F-1D18A9856A87
last_name: Cherepanov
- first_name: Giacomo
full_name: Bighin, Giacomo
id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
last_name: Bighin
orcid: 0000-0001-8823-9777
- first_name: Constant A.
full_name: Schouder, Constant A.
last_name: Schouder
- first_name: Adam S.
full_name: Chatterley, Adam S.
last_name: Chatterley
- first_name: Simon H.
full_name: Albrechtsen, Simon H.
last_name: Albrechtsen
- first_name: Alberto Viñas
full_name: Muñoz, Alberto Viñas
last_name: Muñoz
- first_name: Lars
full_name: Christiansen, Lars
last_name: Christiansen
- first_name: Henrik
full_name: Stapelfeldt, Henrik
last_name: Stapelfeldt
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Cherepanov I, Bighin G, Schouder CA, et al. Excited rotational states of molecules
in a superfluid. Physical Review A. 2021;104(6). doi:10.1103/PhysRevA.104.L061303
apa: Cherepanov, I., Bighin, G., Schouder, C. A., Chatterley, A. S., Albrechtsen,
S. H., Muñoz, A. V., … Lemeshko, M. (2021). Excited rotational states of molecules
in a superfluid. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.104.L061303
chicago: Cherepanov, Igor, Giacomo Bighin, Constant A. Schouder, Adam S. Chatterley,
Simon H. Albrechtsen, Alberto Viñas Muñoz, Lars Christiansen, Henrik Stapelfeldt,
and Mikhail Lemeshko. “Excited Rotational States of Molecules in a Superfluid.”
Physical Review A. American Physical Society, 2021. https://doi.org/10.1103/PhysRevA.104.L061303.
ieee: I. Cherepanov et al., “Excited rotational states of molecules in a
superfluid,” Physical Review A, vol. 104, no. 6. American Physical Society,
2021.
ista: Cherepanov I, Bighin G, Schouder CA, Chatterley AS, Albrechtsen SH, Muñoz
AV, Christiansen L, Stapelfeldt H, Lemeshko M. 2021. Excited rotational states
of molecules in a superfluid. Physical Review A. 104(6), L061303.
mla: Cherepanov, Igor, et al. “Excited Rotational States of Molecules in a Superfluid.”
Physical Review A, vol. 104, no. 6, L061303, American Physical Society,
2021, doi:10.1103/PhysRevA.104.L061303.
short: I. Cherepanov, G. Bighin, C.A. Schouder, A.S. Chatterley, S.H. Albrechtsen,
A.V. Muñoz, L. Christiansen, H. Stapelfeldt, M. Lemeshko, Physical Review A 104
(2021).
corr_author: '1'
date_created: 2022-01-16T23:01:29Z
date_published: 2021-12-30T00:00:00Z
date_updated: 2025-03-31T16:00:55Z
day: '30'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.104.L061303
ec_funded: 1
external_id:
arxiv:
- '2107.00468'
isi:
- '000739618300001'
intvolume: ' 104'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://128.84.4.18/abs/2107.00468
month: '12'
oa: 1
oa_version: Preprint
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
- _id: 26986C82-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: M02641
name: A path-integral approach to composite impurities
publication: Physical Review A
publication_identifier:
eissn:
- 2469-9934
issn:
- 2469-9926
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Excited rotational states of molecules in a superfluid
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 104
year: '2021'
...
---
_id: '10635'
abstract:
- lang: eng
text: The brain efficiently performs nonlinear computations through its intricate
networks of spiking neurons, but how this is done remains elusive. While nonlinear
computations can be implemented successfully in spiking neural networks, this
requires supervised training and the resulting connectivity can be hard to interpret.
In contrast, the required connectivity for any computation in the form of a linear
dynamical system can be directly derived and understood with the spike coding
network (SCN) framework. These networks also have biologically realistic activity
patterns and are highly robust to cell death. Here we extend the SCN framework
to directly implement any polynomial dynamical system, without the need for training.
This results in networks requiring a mix of synapse types (fast, slow, and multiplicative),
which we term multiplicative spike coding networks (mSCNs). Using mSCNs, we demonstrate
how to directly derive the required connectivity for several nonlinear dynamical
systems. We also show how to carry out higher-order polynomials with coupled networks
that use only pair-wise multiplicative synapses, and provide expected numbers
of connections for each synapse type. Overall, our work demonstrates a novel method
for implementing nonlinear computations in spiking neural networks, while keeping
the attractive features of standard SCNs (robustness, realistic activity patterns,
and interpretable connectivity). Finally, we discuss the biological plausibility
of our approach, and how the high accuracy and robustness of the approach may
be of interest for neuromorphic computing.
acknowledgement: "A preprint version of this article has been peer-reviewed and recommended
by Peer Community In Neuroscience (DOI link to the recommendation: https://doi.org/10.24072/pci.cneuro.100003).\r\nWe
thank Christian Machens and Nuno Calaim for useful discussions on the project. This
report\r\ncame out of a collaboration started at the CAJAL Advanced Neuroscience
Training Programme in\r\nComputational Neuroscience in Lisbon, Portugal, during
the 2019 summer. The authors would\r\nlike to thank the participants, TAs, lecturers,
and organizers of the summer school. SWK was\r\nsupported by the Simons Collaboration
on the Global Brain (543009). WFP was supported by\r\nFCT (032077). MN was supported
by European Union Horizon 2020 (665385).\r\n"
article_number: e68
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Michele
full_name: Nardin, Michele
id: 30BD0376-F248-11E8-B48F-1D18A9856A87
last_name: Nardin
orcid: 0000-0001-8849-6570
- first_name: James W.
full_name: Phillips, James W.
last_name: Phillips
- first_name: William F.
full_name: Podlaski, William F.
last_name: Podlaski
- first_name: Sander W.
full_name: Keemink, Sander W.
last_name: Keemink
citation:
ama: Nardin M, Phillips JW, Podlaski WF, Keemink SW. Nonlinear computations in spiking
neural networks through multiplicative synapses. Peer Community Journal.
2021;1. doi:10.24072/pcjournal.69
apa: Nardin, M., Phillips, J. W., Podlaski, W. F., & Keemink, S. W. (2021).
Nonlinear computations in spiking neural networks through multiplicative synapses.
Peer Community Journal. Peer Community In. https://doi.org/10.24072/pcjournal.69
chicago: Nardin, Michele, James W. Phillips, William F. Podlaski, and Sander W.
Keemink. “Nonlinear Computations in Spiking Neural Networks through Multiplicative
Synapses.” Peer Community Journal. Peer Community In, 2021. https://doi.org/10.24072/pcjournal.69.
ieee: M. Nardin, J. W. Phillips, W. F. Podlaski, and S. W. Keemink, “Nonlinear computations
in spiking neural networks through multiplicative synapses,” Peer Community
Journal, vol. 1. Peer Community In, 2021.
ista: Nardin M, Phillips JW, Podlaski WF, Keemink SW. 2021. Nonlinear computations
in spiking neural networks through multiplicative synapses. Peer Community Journal.
1, e68.
mla: Nardin, Michele, et al. “Nonlinear Computations in Spiking Neural Networks
through Multiplicative Synapses.” Peer Community Journal, vol. 1, e68,
Peer Community In, 2021, doi:10.24072/pcjournal.69.
short: M. Nardin, J.W. Phillips, W.F. Podlaski, S.W. Keemink, Peer Community Journal
1 (2021).
corr_author: '1'
date_created: 2022-01-17T11:12:40Z
date_published: 2021-12-15T00:00:00Z
date_updated: 2025-05-14T11:23:19Z
day: '15'
ddc:
- '519'
department:
- _id: GradSch
- _id: JoCs
doi: 10.24072/pcjournal.69
ec_funded: 1
external_id:
arxiv:
- '2009.03857'
file:
- access_level: open_access
checksum: cd9af6b331918608f2e3d1c7940cbf4f
content_type: application/pdf
creator: mnardin
date_created: 2022-01-17T11:15:26Z
date_updated: 2022-01-17T11:15:26Z
file_id: '10636'
file_name: 10_24072_pcjournal_69.pdf
file_size: 3311494
relation: main_file
success: 1
file_date_updated: 2022-01-17T11:15:26Z
has_accepted_license: '1'
intvolume: ' 1'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication: Peer Community Journal
publication_identifier:
eissn:
- 2804-3871
publication_status: published
publisher: Peer Community In
quality_controlled: '1'
scopus_import: '1'
status: public
title: Nonlinear computations in spiking neural networks through multiplicative synapses
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: 1
year: '2021'
...
---
_id: '10644'
abstract:
- lang: eng
text: The purpose of this application note is to demonstrate a working example of
a superconducting qubit measurement in a Bluefors cryostat using the Keysight
quantum control hardware. Our motivation is twofold. First, we provide pre-qualification
data that the Bluefors cryostat, including filtering and wiring, can support long-lived
qubits. Second, we demonstrate that the Keysight system (controlled using Labber)
provides a straightforward solution to perform these characterization measurements.
This document is intended as a brief guide for starting an experimental platform
for testing superconducting qubits. The setup described here is an immediate jumping
off point for a suite of applications including testing quantum logical gates,
quantum optics with microwaves, or even using the qubit itself as a sensitive
probe of local electromagnetic fields. Qubit measurements rely on high performance
of both the physical sample environment and the measurement electronics. An overview
of the cryogenic system is shown in Figure 1, and an overview of the integration
between the electronics and cryostat (including wiring details) is shown in Figure
2.
alternative_title:
- Bluefors Blog
article_processing_charge: No
author:
- first_name: Russell
full_name: Lake, Russell
last_name: Lake
- first_name: Slawomir
full_name: Simbierowicz, Slawomir
last_name: Simbierowicz
- first_name: Philip
full_name: Krantz, Philip
last_name: Krantz
- first_name: Farid
full_name: Hassani, Farid
id: 2AED110C-F248-11E8-B48F-1D18A9856A87
last_name: Hassani
orcid: 0000-0001-6937-5773
- first_name: Johannes M
full_name: Fink, Johannes M
id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
last_name: Fink
orcid: 0000-0001-8112-028X
citation:
ama: 'Lake R, Simbierowicz S, Krantz P, Hassani F, Fink JM. The Bluefors Dilution
Refrigerator as an Integrated Quantum Measurement System. Helsinki, Finland:
Bluefors Oy; 2021.'
apa: 'Lake, R., Simbierowicz, S., Krantz, P., Hassani, F., & Fink, J. M. (2021).
The Bluefors dilution refrigerator as an integrated quantum measurement system.
Helsinki, Finland: Bluefors Oy.'
chicago: 'Lake, Russell, Slawomir Simbierowicz, Philip Krantz, Farid Hassani, and
Johannes M Fink. The Bluefors Dilution Refrigerator as an Integrated Quantum
Measurement System. Helsinki, Finland: Bluefors Oy, 2021.'
ieee: 'R. Lake, S. Simbierowicz, P. Krantz, F. Hassani, and J. M. Fink, The Bluefors
dilution refrigerator as an integrated quantum measurement system. Helsinki,
Finland: Bluefors Oy, 2021.'
ista: 'Lake R, Simbierowicz S, Krantz P, Hassani F, Fink JM. 2021. The Bluefors
dilution refrigerator as an integrated quantum measurement system, Helsinki, Finland:
Bluefors Oy, 9p.'
mla: Lake, Russell, et al. The Bluefors Dilution Refrigerator as an Integrated
Quantum Measurement System. Bluefors Oy, 2021.
short: R. Lake, S. Simbierowicz, P. Krantz, F. Hassani, J.M. Fink, The Bluefors
Dilution Refrigerator as an Integrated Quantum Measurement System, Bluefors Oy,
Helsinki, Finland, 2021.
date_created: 2022-01-19T08:29:57Z
date_published: 2021-04-20T00:00:00Z
date_updated: 2026-06-18T08:45:11Z
day: '20'
ddc:
- '530'
department:
- _id: JoFi
keyword:
- Application note
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://bluefors.com/blog/integrated-quantum-measurement-system/
month: '04'
oa: 1
oa_version: Published Version
page: '9'
place: Helsinki, Finland
publication_status: published
publisher: Bluefors Oy
quality_controlled: '1'
status: public
title: The Bluefors dilution refrigerator as an integrated quantum measurement system
type: other_academic_publication
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '10645'
abstract:
- lang: eng
text: "Superconducting qubits have emerged as a highly versatile and useful platform
for quantum technological applications [1]. Bluefors and Zurich Instruments have
supported the growth of this field from the 2010s onwards by providing well-engineered
and reliable measurement infrastructure [2]– [6]. Having a long and stable qubit
lifetime is a critical system property. Therefore, considerable effort has already
gone into measuring qubit energy-relaxation timescales and their fluctuations,
see Refs. [7]–[10] among others. Accurately extracting the statistics of a quantum
device requires users to perform time consuming measurements. One measurement
challenge is that the detection of the state-dependent\r\nresponse of a superconducting
resonator due to a dispersively-coupled qubit requires an inherently low signal
level. Consequently, measurements must be performed using a microwave probe that
contains only a few microwave photons. Improving the signal-to-noise ratio (SNR)
by using near-quantum limited parametric amplifiers as well as the use of optimized
signal processing enabled by efficient room temperature instrumentation help to
reduce measurement time. An empirical observation for fixed frequency transmons
from recent literature is that as the energy-relaxation time \U0001D447\U0001D4471
increases, so do its natural temporal fluctuations [7], [10]. This necessitates
many repeated measurements to understand the statistics (see for example, Ref.
[10]). In addition, as state-of-the-art qubits increase in lifetime, longer\r\nmeasurement
times are expected to obtain accurate statistics. As described below, the scaling
of the widths of the qubit energy-relaxation distributions also reveal clues about
the origin of the energy-relaxation."
alternative_title:
- Bluefors Blog
article_processing_charge: No
author:
- first_name: Slawomir
full_name: Simbierowicz, Slawomir
last_name: Simbierowicz
- first_name: Chunyan
full_name: Shi, Chunyan
last_name: Shi
- first_name: Michele
full_name: Collodo, Michele
last_name: Collodo
- first_name: Moritz
full_name: Kirste, Moritz
last_name: Kirste
- first_name: Farid
full_name: Hassani, Farid
id: 2AED110C-F248-11E8-B48F-1D18A9856A87
last_name: Hassani
orcid: 0000-0001-6937-5773
- first_name: Johannes M
full_name: Fink, Johannes M
id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
last_name: Fink
orcid: 0000-0001-8112-028X
- first_name: Jonas
full_name: Bylander, Jonas
last_name: Bylander
- first_name: Daniel
full_name: Perez Lozano, Daniel
last_name: Perez Lozano
- first_name: Russell
full_name: Lake, Russell
last_name: Lake
citation:
ama: 'Simbierowicz S, Shi C, Collodo M, et al. Qubit Energy-Relaxation Statistics
in the Bluefors Quantum Measurement System. Helsinki, Finland: Bluefors Oy;
2021.'
apa: 'Simbierowicz, S., Shi, C., Collodo, M., Kirste, M., Hassani, F., Fink, J.
M., … Lake, R. (2021). Qubit energy-relaxation statistics in the Bluefors quantum
measurement system. Helsinki, Finland: Bluefors Oy.'
chicago: 'Simbierowicz, Slawomir, Chunyan Shi, Michele Collodo, Moritz Kirste, Farid
Hassani, Johannes M Fink, Jonas Bylander, Daniel Perez Lozano, and Russell Lake.
Qubit Energy-Relaxation Statistics in the Bluefors Quantum Measurement System.
Helsinki, Finland: Bluefors Oy, 2021.'
ieee: 'S. Simbierowicz et al., Qubit energy-relaxation statistics in the
Bluefors quantum measurement system. Helsinki, Finland: Bluefors Oy, 2021.'
ista: 'Simbierowicz S, Shi C, Collodo M, Kirste M, Hassani F, Fink JM, Bylander
J, Perez Lozano D, Lake R. 2021. Qubit energy-relaxation statistics in the Bluefors
quantum measurement system, Helsinki, Finland: Bluefors Oy, 8p.'
mla: Simbierowicz, Slawomir, et al. Qubit Energy-Relaxation Statistics in the
Bluefors Quantum Measurement System. Bluefors Oy, 2021.
short: S. Simbierowicz, C. Shi, M. Collodo, M. Kirste, F. Hassani, J.M. Fink, J.
Bylander, D. Perez Lozano, R. Lake, Qubit Energy-Relaxation Statistics in the
Bluefors Quantum Measurement System, Bluefors Oy, Helsinki, Finland, 2021.
date_created: 2022-01-19T08:41:14Z
date_published: 2021-06-03T00:00:00Z
date_updated: 2026-06-18T08:46:15Z
day: '03'
ddc:
- '530'
department:
- _id: JoFi
keyword:
- Application note
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://bluefors.com/blog/application-note-qubit-energy-relaxation-statistics-bluefors-quantum-measurement-system/
month: '06'
oa: 1
oa_version: Published Version
page: '8'
place: Helsinki, Finland
publication_status: published
publisher: Bluefors Oy
quality_controlled: '1'
status: public
title: Qubit energy-relaxation statistics in the Bluefors quantum measurement system
type: other_academic_publication
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '10649'
abstract:
- lang: eng
text: Harnessing the properties of vortices in superconductors is crucial for fundamental
science and technological applications; thus, it has been an ongoing goal to locally
probe and control vortices. Here, we use a scanning probe technique that enables
studies of vortex dynamics in superconducting systems by leveraging the resonant
behavior of a raster-scanned, magnetic-tipped cantilever. This experimental setup
allows us to image and control vortices, as well as extract key energy scales
of the vortex interactions. Applying this technique to lattices of superconductor
island arrays on a metal, we obtain a variety of striking spatial patterns that
encode information about the energy landscape for vortices in the system. We interpret
these patterns in terms of local vortex dynamics and extract the relative strengths
of the characteristic energy scales in the system, such as the vortex-magnetic
field and vortex-vortex interaction strengths, as well as the vortex chemical
potential. We also demonstrate that the relative strengths of the interactions
can be tuned and show how these interactions shift with an applied bias. The high
degree of tunability and local nature of such vortex imaging and control not only
enable new understanding of vortex interactions, but also have potential applications
in more complex systems such as those relevant to quantum computing.
acknowledgement: This work was supported by the Department of Energy (DOE) Basic Energy
Sciences under Grant No. DE-SC0012649 and the National Science Foundation (NSF)
under Grant No. DMR 17-10437. V.C. was supported by the Gordon and Betty Moore Foundation
EPiQS Initiative through Grant No. GBMF4305. N.M. also acknowledges support from
DOE-EFRC under Grant No. DE-SC0021238 for analysis/manuscript preparation. This
research was carried out in part in the Materials Research Laboratory Central Research
Facilities, University of Illinois.
article_number: '224526'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Tyler R.
full_name: Naibert, Tyler R.
last_name: Naibert
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Rita
full_name: Garrido-Menacho, Rita
last_name: Garrido-Menacho
- first_name: Malcolm
full_name: Durkin, Malcolm
last_name: Durkin
- first_name: Brian
full_name: Wolin, Brian
last_name: Wolin
- first_name: Victor
full_name: Chua, Victor
last_name: Chua
- first_name: Ian
full_name: Mondragon-Shem, Ian
last_name: Mondragon-Shem
- first_name: Taylor
full_name: Hughes, Taylor
last_name: Hughes
- first_name: Nadya
full_name: Mason, Nadya
last_name: Mason
- first_name: Raffi
full_name: Budakian, Raffi
last_name: Budakian
citation:
ama: Naibert TR, Polshyn H, Garrido-Menacho R, et al. Imaging and controlling vortex
dynamics in mesoscopic superconductor-normal-metal-superconductor arrays. Physical
Review B. 2021;103(22). doi:10.1103/physrevb.103.224526
apa: Naibert, T. R., Polshyn, H., Garrido-Menacho, R., Durkin, M., Wolin, B., Chua,
V., … Budakian, R. (2021). Imaging and controlling vortex dynamics in mesoscopic
superconductor-normal-metal-superconductor arrays. Physical Review B. American
Physical Society. https://doi.org/10.1103/physrevb.103.224526
chicago: Naibert, Tyler R., Hryhoriy Polshyn, Rita Garrido-Menacho, Malcolm Durkin,
Brian Wolin, Victor Chua, Ian Mondragon-Shem, Taylor Hughes, Nadya Mason, and
Raffi Budakian. “Imaging and Controlling Vortex Dynamics in Mesoscopic Superconductor-Normal-Metal-Superconductor
Arrays.” Physical Review B. American Physical Society, 2021. https://doi.org/10.1103/physrevb.103.224526.
ieee: T. R. Naibert et al., “Imaging and controlling vortex dynamics in mesoscopic
superconductor-normal-metal-superconductor arrays,” Physical Review B,
vol. 103, no. 22. American Physical Society, 2021.
ista: Naibert TR, Polshyn H, Garrido-Menacho R, Durkin M, Wolin B, Chua V, Mondragon-Shem
I, Hughes T, Mason N, Budakian R. 2021. Imaging and controlling vortex dynamics
in mesoscopic superconductor-normal-metal-superconductor arrays. Physical Review
B. 103(22), 224526.
mla: Naibert, Tyler R., et al. “Imaging and Controlling Vortex Dynamics in Mesoscopic
Superconductor-Normal-Metal-Superconductor Arrays.” Physical Review B,
vol. 103, no. 22, 224526, American Physical Society, 2021, doi:10.1103/physrevb.103.224526.
short: T.R. Naibert, H. Polshyn, R. Garrido-Menacho, M. Durkin, B. Wolin, V. Chua,
I. Mondragon-Shem, T. Hughes, N. Mason, R. Budakian, Physical Review B 103 (2021).
date_created: 2022-01-20T09:39:40Z
date_published: 2021-06-24T00:00:00Z
date_updated: 2024-10-14T11:13:18Z
day: '24'
doi: 10.1103/physrevb.103.224526
extern: '1'
external_id:
arxiv:
- '1705.08956'
intvolume: ' 103'
issue: '22'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1705.08956
month: '06'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Imaging and controlling vortex dynamics in mesoscopic superconductor-normal-metal-superconductor
arrays
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 103
year: '2021'
...
---
_id: '10651'
abstract:
- lang: eng
text: Electrons in the moiré flat bands of magic angle twisted bilayer graphene
aligned to hexagonal boron nitride can break time reversal symmetry and open an
interaction-driven, topological gap. The resulting magnetic order and associated
quantized anomalous Hall effect have properties that diverge substantially from
quantized anomalous Hall effects observed in other systems. I will present transport
data and scanning probe magnetometry data acquired using a nanoSQUID-on-tip microscope.
A quantitative analysis of the magnitude of the magnetization of the Chern magnet
shows that the magnetic moment per moiré unit cell substantially exceeds 1 μB
and grows rapidly in the topological gap, consistent with an orbital origin for
the magnetic order. We find that the Barkhausen jumps observed in transport measurements
can be mapped directly to microscopic motion of ferromagnetic domain walls. These
domain walls are strongly pinned to disorder in the device and are reproducible
across thermal cycles, suggesting coupling between the magnetic degrees of freedom
and structural inhomogeneity.
acknowledgement: I acknowledge and appreciate support from the Hertz Foundation and
from the National Science Foundation Graduate Research Fellowship Program under
grant 1650114.
alternative_title:
- Bulletin of the American Physical Society
article_number: L42.00012
article_processing_charge: No
author:
- first_name: Charles
full_name: Tschirhart, Charles
last_name: Tschirhart
- first_name: Marec
full_name: Serlin, Marec
last_name: Serlin
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Avi G.
full_name: Shragai, Avi G.
last_name: Shragai
- first_name: Zhengchao
full_name: Xia, Zhengchao
last_name: Xia
- first_name: Jiacheng
full_name: Zhu, Jiacheng
last_name: Zhu
- first_name: Yuxuan
full_name: Zhang, Yuxuan
last_name: Zhang
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Takashi
full_name: Taniguchi, Takashi
last_name: Taniguchi
- first_name: Martin E.
full_name: Huber, Martin E.
last_name: Huber
- first_name: Andrea
full_name: Young, Andrea
last_name: Young
citation:
ama: 'Tschirhart C, Serlin M, Polshyn H, et al. Probing orbital Chern ferromagnet
phase in twisted bilayer graphene. In: APS March Meeting 2021. Vol 66.
American Physical Society; 2021.'
apa: 'Tschirhart, C., Serlin, M., Polshyn, H., Shragai, A. G., Xia, Z., Zhu, J.,
… Young, A. (2021). Probing orbital Chern ferromagnet phase in twisted bilayer
graphene. In APS March Meeting 2021 (Vol. 66). Virtual, United States:
American Physical Society.'
chicago: Tschirhart, Charles, Marec Serlin, Hryhoriy Polshyn, Avi G. Shragai, Zhengchao
Xia, Jiacheng Zhu, Yuxuan Zhang, et al. “Probing Orbital Chern Ferromagnet Phase
in Twisted Bilayer Graphene.” In APS March Meeting 2021, Vol. 66. American
Physical Society, 2021.
ieee: C. Tschirhart et al., “Probing orbital Chern ferromagnet phase in twisted
bilayer graphene,” in APS March Meeting 2021, Virtual, United States, 2021,
vol. 66, no. 1.
ista: 'Tschirhart C, Serlin M, Polshyn H, Shragai AG, Xia Z, Zhu J, Zhang Y, Watanabe
K, Taniguchi T, Huber ME, Young A. 2021. Probing orbital Chern ferromagnet phase
in twisted bilayer graphene. APS March Meeting 2021. APS: American Physical Society,
Bulletin of the American Physical Society, vol. 66, L42.00012.'
mla: Tschirhart, Charles, et al. “Probing Orbital Chern Ferromagnet Phase in Twisted
Bilayer Graphene.” APS March Meeting 2021, vol. 66, no. 1, L42.00012, American
Physical Society, 2021.
short: C. Tschirhart, M. Serlin, H. Polshyn, A.G. Shragai, Z. Xia, J. Zhu, Y. Zhang,
K. Watanabe, T. Taniguchi, M.E. Huber, A. Young, in:, APS March Meeting 2021,
American Physical Society, 2021.
conference:
end_date: 2021-03-19
location: Virtual, United States
name: 'APS: American Physical Society'
start_date: 2021-03-15
date_created: 2022-01-20T15:43:16Z
date_published: 2021-03-01T00:00:00Z
date_updated: 2022-01-27T09:37:51Z
day: '01'
extern: '1'
intvolume: ' 66'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://meetings.aps.org/Meeting/MAR21/Session/L42.12
month: '03'
oa: 1
oa_version: None
publication: APS March Meeting 2021
publication_identifier:
issn:
- 0003-0503
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Probing orbital Chern ferromagnet phase in twisted bilayer graphene
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 66
year: '2021'
...
---
_id: '10655'
abstract:
- lang: eng
text: "Adeno-associated viruses (AAVs) are widely used to deliver genetic material
in vivo to distinct cell types such as neurons or glial cells, allowing for targeted
manipulation. Transduction of microglia is mostly excluded from this strategy,
likely due to the cells’ heterogeneous state upon environmental changes, which
makes AAV design challenging. Here, we established the retina as a model system
for microglial AAV validation and optimization. First, we show that AAV2/6 transduced
microglia in both synaptic layers, where layer preference corresponds to the intravitreal
or subretinal delivery method. Surprisingly, we observed significantly enhanced
microglial transduction during photoreceptor degeneration. Thus, we modified the
AAV6 capsid to reduce heparin binding by introducing four point mutations (K531E,
R576Q, K493S, and K459S), resulting in increased microglial transduction in the
outer plexiform layer. Finally, to improve microglial-specific transduction, we
validated a Cre-dependent transgene delivery cassette for use in combination with
the Cx3cr1CreERT2 mouse line. Together, our results provide a foundation for future
studies optimizing AAV-mediated microglia transduction and highlight that environmental
conditions influence microglial transduction efficiency.\r\n"
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
- _id: PreCl
acknowledgement: This project has received funding from the European Research Council
(ERC) under the European Union’s Horizon 2020 research and innovation programme
(grant agreement no. 715571). The research was supported by the Scientific Service
Units (SSU) of IST Austria through resources provided by the Bioimaging Facility,
the Life Science Facility, and the Pre-Clinical Facility, namely Sonja Haslinger
and Michael Schunn for their animal colony management and support. We would also
like to thank Chakrabarty Lab for sharing the plasmids for AAV2/6 production. Finally,
we would like to thank the Siegert team members for discussion about the manuscript.
article_processing_charge: Yes
article_type: original
author:
- first_name: Margaret E
full_name: Maes, Margaret E
id: 3838F452-F248-11E8-B48F-1D18A9856A87
last_name: Maes
orcid: 0000-0001-9642-1085
- first_name: Gabriele M.
full_name: Wögenstein, Gabriele M.
last_name: Wögenstein
- first_name: Gloria
full_name: Colombo, Gloria
id: 3483CF6C-F248-11E8-B48F-1D18A9856A87
last_name: Colombo
orcid: 0000-0001-9434-8902
- first_name: Raquel
full_name: Casado Polanco, Raquel
id: 15240fc1-dbcd-11ea-9d1d-ac5a786425fd
last_name: Casado Polanco
orcid: 0000-0001-8293-4568
- first_name: Sandra
full_name: Siegert, Sandra
id: 36ACD32E-F248-11E8-B48F-1D18A9856A87
last_name: Siegert
orcid: 0000-0001-8635-0877
citation:
ama: Maes ME, Wögenstein GM, Colombo G, Casado Polanco R, Siegert S. Optimizing
AAV2/6 microglial targeting identified enhanced efficiency in the photoreceptor
degenerative environment. Molecular Therapy - Methods and Clinical Development.
2021;23:210-224. doi:10.1016/j.omtm.2021.09.006
apa: Maes, M. E., Wögenstein, G. M., Colombo, G., Casado Polanco, R., & Siegert,
S. (2021). Optimizing AAV2/6 microglial targeting identified enhanced efficiency
in the photoreceptor degenerative environment. Molecular Therapy - Methods
and Clinical Development. Elsevier. https://doi.org/10.1016/j.omtm.2021.09.006
chicago: Maes, Margaret E, Gabriele M. Wögenstein, Gloria Colombo, Raquel Casado
Polanco, and Sandra Siegert. “Optimizing AAV2/6 Microglial Targeting Identified
Enhanced Efficiency in the Photoreceptor Degenerative Environment.” Molecular
Therapy - Methods and Clinical Development. Elsevier, 2021. https://doi.org/10.1016/j.omtm.2021.09.006.
ieee: M. E. Maes, G. M. Wögenstein, G. Colombo, R. Casado Polanco, and S. Siegert,
“Optimizing AAV2/6 microglial targeting identified enhanced efficiency in the
photoreceptor degenerative environment,” Molecular Therapy - Methods and Clinical
Development, vol. 23. Elsevier, pp. 210–224, 2021.
ista: Maes ME, Wögenstein GM, Colombo G, Casado Polanco R, Siegert S. 2021. Optimizing
AAV2/6 microglial targeting identified enhanced efficiency in the photoreceptor
degenerative environment. Molecular Therapy - Methods and Clinical Development.
23, 210–224.
mla: Maes, Margaret E., et al. “Optimizing AAV2/6 Microglial Targeting Identified
Enhanced Efficiency in the Photoreceptor Degenerative Environment.” Molecular
Therapy - Methods and Clinical Development, vol. 23, Elsevier, 2021, pp. 210–24,
doi:10.1016/j.omtm.2021.09.006.
short: M.E. Maes, G.M. Wögenstein, G. Colombo, R. Casado Polanco, S. Siegert, Molecular
Therapy - Methods and Clinical Development 23 (2021) 210–224.
corr_author: '1'
date_created: 2022-01-23T23:01:28Z
date_published: 2021-12-10T00:00:00Z
date_updated: 2025-04-14T07:41:46Z
day: '10'
ddc:
- '570'
department:
- _id: SaSi
- _id: SiHi
doi: 10.1016/j.omtm.2021.09.006
ec_funded: 1
external_id:
isi:
- '000748748500019'
file:
- access_level: open_access
checksum: 77dc540e8011c5475031bdf6ccef20a6
content_type: application/pdf
creator: cchlebak
date_created: 2022-01-24T07:43:09Z
date_updated: 2022-01-24T07:43:09Z
file_id: '10657'
file_name: 2021_MolTherMethodsClinDev_Maes.pdf
file_size: 4794147
relation: main_file
success: 1
file_date_updated: 2022-01-24T07:43:09Z
has_accepted_license: '1'
intvolume: ' 23'
isi: 1
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
page: 210-224
project:
- _id: 25D4A630-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '715571'
name: Microglia action towards neuronal circuit formation and function in health
and disease
publication: Molecular Therapy - Methods and Clinical Development
publication_identifier:
eissn:
- 2329-0501
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Optimizing AAV2/6 microglial targeting identified enhanced efficiency in the
photoreceptor degenerative environment
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: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 23
year: '2021'
...
---
_id: '10668'
abstract:
- lang: eng
text: 'Robustness to variations in lighting conditions is a key objective for any
deep vision system. To this end, our paper extends the receptive field of convolutional
neural networks with two residual components, ubiquitous in the visual processing
system of vertebrates: On-center and off-center pathways, with an excitatory center
and inhibitory surround; OOCS for short. The On-center pathway is excited by the
presence of a light stimulus in its center, but not in its surround, whereas the
Off-center pathway is excited by the absence of a light stimulus in its center,
but not in its surround. We design OOCS pathways via a difference of Gaussians,
with their variance computed analytically from the size of the receptive fields.
OOCS pathways complement each other in their response to light stimuli, ensuring
this way a strong edge-detection capability, and as a result an accurate and robust
inference under challenging lighting conditions. We provide extensive empirical
evidence showing that networks supplied with OOCS pathways gain accuracy and illumination-robustness
from the novel edge representation, compared to other baselines.'
acknowledgement: Z.B. is supported by the Doctoral College Resilient Embedded Systems,
which is run jointly by the TU Wien’s Faculty of Informatics and the UAS Technikum
Wien. R.G. is partially supported by the Horizon 2020 Era-Permed project Persorad,
and ECSEL Project grant no. 783163 (iDev40). R.H and D.R were partially supported
by Boeing and MIT. M.L. is supported in part by the Austrian Science Fund (FWF)
under grant Z211-N23 (Wittgenstein Award).
alternative_title:
- PMLR
article_processing_charge: No
arxiv: 1
author:
- first_name: Zahra
full_name: Babaiee, Zahra
last_name: Babaiee
- first_name: Ramin
full_name: Hasani, Ramin
last_name: Hasani
- first_name: Mathias
full_name: Lechner, Mathias
id: 3DC22916-F248-11E8-B48F-1D18A9856A87
last_name: Lechner
- first_name: Daniela
full_name: Rus, Daniela
last_name: Rus
- first_name: Radu
full_name: Grosu, Radu
last_name: Grosu
citation:
ama: 'Babaiee Z, Hasani R, Lechner M, Rus D, Grosu R. On-off center-surround receptive
fields for accurate and robust image classification. In: Proceedings of the
38th International Conference on Machine Learning. Vol 139. ML Research Press;
2021:478-489.'
apa: 'Babaiee, Z., Hasani, R., Lechner, M., Rus, D., & Grosu, R. (2021). On-off
center-surround receptive fields for accurate and robust image classification.
In Proceedings of the 38th International Conference on Machine Learning
(Vol. 139, pp. 478–489). Virtual: ML Research Press.'
chicago: Babaiee, Zahra, Ramin Hasani, Mathias Lechner, Daniela Rus, and Radu Grosu.
“On-off Center-Surround Receptive Fields for Accurate and Robust Image Classification.”
In Proceedings of the 38th International Conference on Machine Learning,
139:478–89. ML Research Press, 2021.
ieee: Z. Babaiee, R. Hasani, M. Lechner, D. Rus, and R. Grosu, “On-off center-surround
receptive fields for accurate and robust image classification,” in Proceedings
of the 38th International Conference on Machine Learning, Virtual, 2021, vol.
139, pp. 478–489.
ista: 'Babaiee Z, Hasani R, Lechner M, Rus D, Grosu R. 2021. On-off center-surround
receptive fields for accurate and robust image classification. Proceedings of
the 38th International Conference on Machine Learning. ML: Machine Learning, PMLR,
vol. 139, 478–489.'
mla: Babaiee, Zahra, et al. “On-off Center-Surround Receptive Fields for Accurate
and Robust Image Classification.” Proceedings of the 38th International Conference
on Machine Learning, vol. 139, ML Research Press, 2021, pp. 478–89.
short: Z. Babaiee, R. Hasani, M. Lechner, D. Rus, R. Grosu, in:, Proceedings of
the 38th International Conference on Machine Learning, ML Research Press, 2021,
pp. 478–489.
conference:
end_date: 2021-07-24
location: Virtual
name: 'ML: Machine Learning'
start_date: 2021-07-18
date_created: 2022-01-25T15:46:33Z
date_published: 2021-07-01T00:00:00Z
date_updated: 2025-05-19T11:28:08Z
day: '01'
ddc:
- '000'
department:
- _id: GradSch
- _id: ToHe
external_id:
arxiv:
- '2106.07091'
file:
- access_level: open_access
checksum: d30eae62561bb517d9f978437d7677db
content_type: application/pdf
creator: mlechner
date_created: 2022-01-26T07:38:32Z
date_updated: 2022-01-26T07:38:32Z
file_id: '10681'
file_name: babaiee21a.pdf
file_size: 4246561
relation: main_file
success: 1
file_date_updated: 2022-01-26T07:38:32Z
has_accepted_license: '1'
intvolume: ' 139'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/3.0/
main_file_link:
- open_access: '1'
url: https://proceedings.mlr.press/v139/babaiee21a
month: '07'
oa: 1
oa_version: Published Version
page: 478-489
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: Z211
name: Formal methods for the design and analysis of complex systems
publication: Proceedings of the 38th International Conference on Machine Learning
publication_identifier:
issn:
- 2640-3498
publication_status: published
publisher: ML Research Press
quality_controlled: '1'
status: public
title: On-off center-surround receptive fields for accurate and robust image classification
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/3.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND
3.0)
short: CC BY-NC-ND (3.0)
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 139
year: '2021'
...
---
_id: '10688'
abstract:
- lang: eng
text: "Civl is a static verifier for concurrent programs designed around the conceptual
framework of layered refinement,\r\nwhich views the task of verifying a program
as a sequence of program simplification steps each justified by its own invariant.
Civl verifies a layered concurrent program that compactly expresses all the programs
in this sequence and the supporting invariants. This paper presents the design
and implementation of the Civl verifier."
acknowledgement: This research was performed while Bernhard Kragl was at IST Austria,
supported in part by the Austrian Science Fund (FWF) under grant Z211-N23 (Wittgenstein
Award).
alternative_title:
- Conference Series
article_processing_charge: No
author:
- first_name: Bernhard
full_name: Kragl, Bernhard
id: 320FC952-F248-11E8-B48F-1D18A9856A87
last_name: Kragl
orcid: 0000-0001-7745-9117
- first_name: Shaz
full_name: Qadeer, Shaz
last_name: Qadeer
citation:
ama: 'Kragl B, Qadeer S. The Civl verifier. In: Ruzica P, Whalen MW, eds. Proceedings
of the 21st Conference on Formal Methods in Computer-Aided Design. Vol 2.
TU Wien Academic Press; 2021:143–152. doi:10.34727/2021/isbn.978-3-85448-046-4_23'
apa: 'Kragl, B., & Qadeer, S. (2021). The Civl verifier. In P. Ruzica &
M. W. Whalen (Eds.), Proceedings of the 21st Conference on Formal Methods in
Computer-Aided Design (Vol. 2, pp. 143–152). Virtual: TU Wien Academic Press.
https://doi.org/10.34727/2021/isbn.978-3-85448-046-4_23'
chicago: Kragl, Bernhard, and Shaz Qadeer. “The Civl Verifier.” In Proceedings
of the 21st Conference on Formal Methods in Computer-Aided Design, edited
by Piskac Ruzica and Michael W. Whalen, 2:143–152. TU Wien Academic Press, 2021.
https://doi.org/10.34727/2021/isbn.978-3-85448-046-4_23.
ieee: B. Kragl and S. Qadeer, “The Civl verifier,” in Proceedings of the 21st
Conference on Formal Methods in Computer-Aided Design, Virtual, 2021, vol.
2, pp. 143–152.
ista: 'Kragl B, Qadeer S. 2021. The Civl verifier. Proceedings of the 21st Conference
on Formal Methods in Computer-Aided Design. FMCAD: Formal Methods in Computer-Aided
Design, Conference Series, vol. 2, 143–152.'
mla: Kragl, Bernhard, and Shaz Qadeer. “The Civl Verifier.” Proceedings of the
21st Conference on Formal Methods in Computer-Aided Design, edited by Piskac
Ruzica and Michael W. Whalen, vol. 2, TU Wien Academic Press, 2021, pp. 143–152,
doi:10.34727/2021/isbn.978-3-85448-046-4_23.
short: B. Kragl, S. Qadeer, in:, P. Ruzica, M.W. Whalen (Eds.), Proceedings of the
21st Conference on Formal Methods in Computer-Aided Design, TU Wien Academic Press,
2021, pp. 143–152.
conference:
end_date: 2021-10-22
location: Virtual
name: 'FMCAD: Formal Methods in Computer-Aided Design'
start_date: 2021-10-20
corr_author: '1'
date_created: 2022-01-26T08:01:30Z
date_published: 2021-10-01T00:00:00Z
date_updated: 2025-04-15T06:25:56Z
day: '01'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.34727/2021/isbn.978-3-85448-046-4_23
editor:
- first_name: Piskac
full_name: Ruzica, Piskac
last_name: Ruzica
- first_name: Michael W.
full_name: Whalen, Michael W.
last_name: Whalen
file:
- access_level: open_access
checksum: 35438ac9f9750340b7f8ae4ae3220d9f
content_type: application/pdf
creator: cchlebak
date_created: 2022-01-26T08:04:29Z
date_updated: 2022-01-26T08:04:29Z
file_id: '10689'
file_name: 2021_FCAD2021_Kragl.pdf
file_size: 390555
relation: main_file
success: 1
file_date_updated: 2022-01-26T08:04:29Z
has_accepted_license: '1'
intvolume: ' 2'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: 143–152
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: Z211
name: Formal methods for the design and analysis of complex systems
publication: Proceedings of the 21st Conference on Formal Methods in Computer-Aided
Design
publication_identifier:
isbn:
- 978-3-85448-046-4
publication_status: published
publisher: TU Wien Academic Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: The Civl verifier
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: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 2
year: '2021'
...
---
_id: '10692'
abstract:
- lang: eng
text: We experimentally investigate narrow and topologically nontrivial moiré minibands
hosted by van der Waals heterostructures consisting of a graphene monolayer rotationally
faulted with respect to a Bernal-stacked bilayer. At fillings ν= 1 and 3 electrons
per moiré unit cell within these bands, we observe quantized anomalous Hall effects
with Rxy≈h/2e2, indicative of spontaneous polarization of the system into a single
valley-projected band with Chern number C= 2. Remarkably, we also observe the
evidence of symmetry broken Chern insulator states at ν= 1.5 and 3.5. At ν= 3
we find that the sign of the quantum anomalous Hall effect can be reversed via
field-effect control of the chemical potential. This curious effect arises from
the magnetization contribution due to topological edge states, which drive a reversal
of the total magnetization and thus a switch of the favored magnetic state. Remarkably,
we find that this switch is hysteretic, which we use to demonstrate non-volatile
electric-field-induced reversal of the magnetic state. Voltage control of magnetic
states can be used to electrically pattern nonvolatile magnetic domain structures
hosting chiral edge states, with applications ranging from reconfigurable microwave
circuit elements to ultra-low-power magnetic memory.
alternative_title:
- Bulletin of the American Physical Society
article_number: E42.00010
article_processing_charge: No
author:
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Jihang
full_name: Zhu, Jihang
last_name: Zhu
- first_name: Manish
full_name: Kumar, Manish
last_name: Kumar
- first_name: Yuxuan
full_name: Zhang, Yuxuan
last_name: Zhang
- first_name: Fangyuan
full_name: Yang, Fangyuan
last_name: Yang
- first_name: Charles
full_name: Tschirhart, Charles
last_name: Tschirhart
- first_name: Marec
full_name: Serlin, Marec
last_name: Serlin
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Takashi
full_name: Tanaguchi, Takashi
last_name: Tanaguchi
- first_name: Allan
full_name: MacDonald, Allan
last_name: MacDonald
- first_name: Andrea
full_name: Young, Andrea
last_name: Young
citation:
ama: 'Polshyn H, Zhu J, Kumar M, et al. Orbital Chern insulator states in twisted
monolayer-bilayer graphene and electrical switching of topological and magnetic
order. In: APS March Meeting 2021. Vol 66. American Physical Society; 2021.'
apa: 'Polshyn, H., Zhu, J., Kumar, M., Zhang, Y., Yang, F., Tschirhart, C., … Young,
A. (2021). Orbital Chern insulator states in twisted monolayer-bilayer graphene
and electrical switching of topological and magnetic order. In APS March Meeting
2021 (Vol. 66). Virtual: American Physical Society.'
chicago: Polshyn, Hryhoriy, Jihang Zhu, Manish Kumar, Yuxuan Zhang, Fangyuan Yang,
Charles Tschirhart, Marec Serlin, et al. “Orbital Chern Insulator States in Twisted
Monolayer-Bilayer Graphene and Electrical Switching of Topological and Magnetic
Order.” In APS March Meeting 2021, Vol. 66. American Physical Society,
2021.
ieee: H. Polshyn et al., “Orbital Chern insulator states in twisted monolayer-bilayer
graphene and electrical switching of topological and magnetic order,” in APS
March Meeting 2021, Virtual, 2021, vol. 66, no. 1.
ista: 'Polshyn H, Zhu J, Kumar M, Zhang Y, Yang F, Tschirhart C, Serlin M, Watanabe
K, Tanaguchi T, MacDonald A, Young A. 2021. Orbital Chern insulator states in
twisted monolayer-bilayer graphene and electrical switching of topological and
magnetic order. APS March Meeting 2021. APS: American Physical Society, Bulletin
of the American Physical Society, vol. 66, E42.00010.'
mla: Polshyn, Hryhoriy, et al. “Orbital Chern Insulator States in Twisted Monolayer-Bilayer
Graphene and Electrical Switching of Topological and Magnetic Order.” APS March
Meeting 2021, vol. 66, no. 1, E42.00010, American Physical Society, 2021.
short: H. Polshyn, J. Zhu, M. Kumar, Y. Zhang, F. Yang, C. Tschirhart, M. Serlin,
K. Watanabe, T. Tanaguchi, A. MacDonald, A. Young, in:, APS March Meeting 2021,
American Physical Society, 2021.
conference:
end_date: 2021-03-19
location: Virtual
name: 'APS: American Physical Society'
start_date: 2021-03-15
date_created: 2022-01-27T09:49:48Z
date_published: 2021-03-01T00:00:00Z
date_updated: 2022-01-27T10:46:23Z
day: '01'
extern: '1'
intvolume: ' 66'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://meetings.aps.org/Meeting/MAR21/Session/E42.10
month: '03'
oa: 1
oa_version: Published Version
publication: APS March Meeting 2021
publication_identifier:
issn:
- 0003-0503
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Orbital Chern insulator states in twisted monolayer-bilayer graphene and electrical
switching of topological and magnetic order
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 66
year: '2021'
...
---
_id: '10694'
abstract:
- lang: eng
text: 'In a two-player zero-sum graph game the players move a token throughout a
graph to produce an infinite path, which determines the winner or payoff of the
game. Traditionally, the players alternate turns in moving the token. In bidding
games, however, the players have budgets, and in each turn, we hold an “auction”
(bidding) to determine which player moves the token: both players simultaneously
submit bids and the higher bidder moves the token. The bidding mechanisms differ
in their payment schemes. Bidding games were largely studied with variants of
first-price bidding in which only the higher bidder pays his bid. We focus on
all-pay bidding, where both players pay their bids. Finite-duration all-pay bidding
games were studied and shown to be technically more challenging than their first-price
counterparts. We study for the first time, infinite-duration all-pay bidding games.
Our most interesting results are for mean-payoff objectives: we portray a complete
picture for games played on strongly-connected graphs. We study both pure (deterministic)
and mixed (probabilistic) strategies and completely characterize the optimal and
almost-sure (with probability 1) payoffs the players can respectively guarantee.
We show that mean-payoff games under all-pay bidding exhibit the intriguing mathematical
properties of their first-price counterparts; namely, an equivalence with random-turn
games in which in each turn, the player who moves is selected according to a (biased)
coin toss. The equivalences for all-pay bidding are more intricate and unexpected
than for first-price bidding.'
acknowledgement: This research was supported in part by the Austrian Science Fund
(FWF) under grant Z211-N23 (Wittgenstein Award), ERC CoG 863818 (FoRM-SMArt), and
by the European Union's Horizon 2020 research and innovation programme under the
Marie Skłodowska-Curie Grant Agreement No. 665385.
article_processing_charge: No
arxiv: 1
author:
- first_name: Guy
full_name: Avni, Guy
id: 463C8BC2-F248-11E8-B48F-1D18A9856A87
last_name: Avni
orcid: 0000-0001-5588-8287
- first_name: Ismael R
full_name: Jecker, Ismael R
id: 85D7C63E-7D5D-11E9-9C0F-98C4E5697425
last_name: Jecker
- first_name: Dorde
full_name: Zikelic, Dorde
id: 294AA7A6-F248-11E8-B48F-1D18A9856A87
last_name: Zikelic
orcid: 0000-0002-4681-1699
citation:
ama: 'Avni G, Jecker IR, Zikelic D. Infinite-duration all-pay bidding games. In:
Marx D, ed. Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms.
Society for Industrial and Applied Mathematics; 2021:617-636. doi:10.1137/1.9781611976465.38'
apa: 'Avni, G., Jecker, I. R., & Zikelic, D. (2021). Infinite-duration all-pay
bidding games. In D. Marx (Ed.), Proceedings of the 2021 ACM-SIAM Symposium
on Discrete Algorithms (pp. 617–636). Virtual: Society for Industrial and
Applied Mathematics. https://doi.org/10.1137/1.9781611976465.38'
chicago: Avni, Guy, Ismael R Jecker, and Dorde Zikelic. “Infinite-Duration All-Pay
Bidding Games.” In Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms,
edited by Dániel Marx, 617–36. Society for Industrial and Applied Mathematics,
2021. https://doi.org/10.1137/1.9781611976465.38.
ieee: G. Avni, I. R. Jecker, and D. Zikelic, “Infinite-duration all-pay bidding
games,” in Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms,
Virtual, 2021, pp. 617–636.
ista: 'Avni G, Jecker IR, Zikelic D. 2021. Infinite-duration all-pay bidding games.
Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms. SODA: Symposium
on Discrete Algorithms, 617–636.'
mla: Avni, Guy, et al. “Infinite-Duration All-Pay Bidding Games.” Proceedings
of the 2021 ACM-SIAM Symposium on Discrete Algorithms, edited by Dániel Marx,
Society for Industrial and Applied Mathematics, 2021, pp. 617–36, doi:10.1137/1.9781611976465.38.
short: G. Avni, I.R. Jecker, D. Zikelic, in:, D. Marx (Ed.), Proceedings of the
2021 ACM-SIAM Symposium on Discrete Algorithms, Society for Industrial and Applied
Mathematics, 2021, pp. 617–636.
conference:
end_date: 2021-01-13
location: Virtual
name: 'SODA: Symposium on Discrete Algorithms'
start_date: 2021-01-10
corr_author: '1'
date_created: 2022-01-27T12:11:23Z
date_published: 2021-01-01T00:00:00Z
date_updated: 2025-04-15T06:26:15Z
day: '01'
department:
- _id: GradSch
- _id: KrCh
doi: 10.1137/1.9781611976465.38
ec_funded: 1
editor:
- first_name: Dániel
full_name: Marx, Dániel
last_name: Marx
external_id:
arxiv:
- '2005.06636'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2005.06636
month: '01'
oa: 1
oa_version: Preprint
page: 617-636
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: Z211
name: Formal methods for the design and analysis of complex systems
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
call_identifier: H2020
grant_number: '863818'
name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication: Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms
publication_identifier:
isbn:
- 978-1-61197-646-5
publication_status: published
publisher: Society for Industrial and Applied Mathematics
quality_controlled: '1'
scopus_import: '1'
status: public
title: Infinite-duration all-pay bidding games
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2021'
...
---
_id: '10762'
abstract:
- lang: eng
text: Methods inspired from machine learning have recently attracted great interest
in the computational study of quantum many-particle systems. So far, however,
it has proven challenging to deal with microscopic models in which the total number
of particles is not conserved. To address this issue, we propose a new variant
of neural network states, which we term neural coherent states. Taking the Fröhlich
impurity model as a case study, we show that neural coherent states can learn
the ground state of non-additive systems very well. In particular, we observe
substantial improvement over the standard coherent state estimates in the most
challenging intermediate coupling regime. Our approach is generic and does not
assume specific details of the system, suggesting wide applications.
acknowledgement: "We acknowledge fruitful discussions with Giacomo Bighin, Giammarco
Fabiani, Areg Ghazaryan, Christoph\r\nLampert, and Artem Volosniev at various stages
of this work. W.R. is a recipient of a DOC Fellowship of the\r\nAustrian Academy
of Sciences and has received funding from the EU Horizon 2020 programme under the
Marie\r\nSkłodowska-Curie Grant Agreement No. 665385. M. L. acknowledges support
by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). This
work is part of the Shell-NWO/FOM-initiative “Computational sciences for energy
research” of Shell and Chemical Sciences, Earth and Life Sciences, Physical Sciences,
FOM and STW."
article_processing_charge: No
arxiv: 1
author:
- first_name: Wojciech
full_name: Rzadkowski, Wojciech
id: 48C55298-F248-11E8-B48F-1D18A9856A87
last_name: Rzadkowski
orcid: 0000-0002-1106-4419
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Johan H.
full_name: Mentink, Johan H.
last_name: Mentink
citation:
ama: Rzadkowski W, Lemeshko M, Mentink JH. Artificial neural network states for
non-additive systems. arXiv. doi:10.48550/arXiv.2105.15193
apa: Rzadkowski, W., Lemeshko, M., & Mentink, J. H. (n.d.). Artificial neural
network states for non-additive systems. arXiv. https://doi.org/10.48550/arXiv.2105.15193
chicago: Rzadkowski, Wojciech, Mikhail Lemeshko, and Johan H. Mentink. “Artificial
Neural Network States for Non-Additive Systems.” ArXiv, n.d. https://doi.org/10.48550/arXiv.2105.15193.
ieee: W. Rzadkowski, M. Lemeshko, and J. H. Mentink, “Artificial neural network
states for non-additive systems,” arXiv. .
ista: Rzadkowski W, Lemeshko M, Mentink JH. Artificial neural network states for
non-additive systems. arXiv, 10.48550/arXiv.2105.15193.
mla: Rzadkowski, Wojciech, et al. “Artificial Neural Network States for Non-Additive
Systems.” ArXiv, doi:10.48550/arXiv.2105.15193.
short: W. Rzadkowski, M. Lemeshko, J.H. Mentink, ArXiv (n.d.).
corr_author: '1'
date_created: 2022-02-17T11:18:57Z
date_published: 2021-05-31T00:00:00Z
date_updated: 2026-04-07T14:20:12Z
day: '31'
department:
- _id: MiLe
doi: 10.48550/arXiv.2105.15193
ec_funded: 1
external_id:
arxiv:
- '2105.15193'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2105.15193
month: '05'
oa: 1
oa_version: Preprint
page: '2105.15193'
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication: arXiv
publication_status: draft
related_material:
record:
- id: '10759'
relation: dissertation_contains
status: public
status: public
title: Artificial neural network states for non-additive systems
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '10803'
abstract:
- lang: eng
text: Given the abundance of applications of ranking in recent years, addressing
fairness concerns around automated ranking systems becomes necessary for increasing
the trust among end-users. Previous work on fair ranking has mostly focused on
application-specific fairness notions, often tailored to online advertising, and
it rarely considers learning as part of the process. In this work, we show how
to transfer numerous fairness notions from binary classification to a learning
to rank setting. Our formalism allows us to design methods for incorporating fairness
objectives with provable generalization guarantees. An extensive experimental
evaluation shows that our method can improve ranking fairness substantially with
no or only little loss of model quality.
article_number: '2102.05996'
article_processing_charge: No
arxiv: 1
author:
- first_name: Nikola H
full_name: Konstantinov, Nikola H
id: 4B9D76E4-F248-11E8-B48F-1D18A9856A87
last_name: Konstantinov
orcid: 0009-0009-5204-7621
- first_name: Christoph
full_name: Lampert, Christoph
id: 40C20FD2-F248-11E8-B48F-1D18A9856A87
last_name: Lampert
orcid: 0000-0002-4561-241X
citation:
ama: Konstantinov NH, Lampert C. Fairness through regularization for learning to
rank. arXiv. doi:10.48550/arXiv.2102.05996
apa: Konstantinov, N. H., & Lampert, C. (n.d.). Fairness through regularization
for learning to rank. arXiv. https://doi.org/10.48550/arXiv.2102.05996
chicago: Konstantinov, Nikola H, and Christoph Lampert. “Fairness through Regularization
for Learning to Rank.” ArXiv, n.d. https://doi.org/10.48550/arXiv.2102.05996.
ieee: N. H. Konstantinov and C. Lampert, “Fairness through regularization for learning
to rank,” arXiv. .
ista: Konstantinov NH, Lampert C. Fairness through regularization for learning to
rank. arXiv, 2102.05996.
mla: Konstantinov, Nikola H., and Christoph Lampert. “Fairness through Regularization
for Learning to Rank.” ArXiv, 2102.05996, doi:10.48550/arXiv.2102.05996.
short: N.H. Konstantinov, C. Lampert, ArXiv (n.d.).
corr_author: '1'
date_created: 2022-02-28T14:13:59Z
date_published: 2021-06-07T00:00:00Z
date_updated: 2026-04-07T14:19:48Z
day: '07'
department:
- _id: ChLa
doi: 10.48550/arXiv.2102.05996
external_id:
arxiv:
- '2102.05996'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2102.05996
month: '06'
oa: 1
oa_version: Preprint
publication: arXiv
publication_status: draft
related_material:
record:
- id: '10799'
relation: dissertation_contains
status: public
status: public
title: Fairness through regularization for learning to rank
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '10806'
abstract:
- lang: eng
text: Ligands are a fundamental part of nanocrystals. They control and direct nanocrystal
syntheses and provide colloidal stability. Bound ligands also affect the nanocrystals’
chemical reactivity and electronic structure. Surface chemistry is thus crucial
to understand nanocrystal properties and functionality. Here, we investigate the
synthesis of metal oxide nanocrystals (CeO2-x, ZnO, and NiO) from metal nitrate
precursors, in the presence of oleylamine ligands. Surprisingly, the nanocrystals
are capped exclusively with a fatty acid instead of oleylamine. Analysis of the
reaction mixtures with nuclear magnetic resonance spectroscopy revealed several
reaction byproducts and intermediates that are common to the decomposition of
Ce, Zn, Ni, and Zr nitrate precursors. Our evidence supports the oxidation of
alkylamine and formation of a carboxylic acid, thus unraveling this counterintuitive
surface chemistry.
acknowledgement: 'This work was financially supported by IST Austria and the Werner
Siemens Foundation. M.C. has received funding from the European Union’s Horizon
2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement
No. 665385. The work was also financially supported by University of Basel, SNSF
NCCR Molecular Systems Engineering (project number: 182895) and SNSF R’equip (project
number: 189622). J.L. is a Serra Húnter Fellow and is grateful to ICREA Academia
program and MICINN/FEDER RTI2018-093996-B-C31 and GC 2017 SGR 128 projects.'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Mariano
full_name: Calcabrini, Mariano
id: 45D7531A-F248-11E8-B48F-1D18A9856A87
last_name: Calcabrini
orcid: 0000-0003-4566-5877
- first_name: Dietger
full_name: Van den Eynden, Dietger
last_name: Van den Eynden
- first_name: Sergi
full_name: Sanchez Ribot, Sergi
id: ddae5a59-f6e0-11ea-865d-d9dc61e77a2a
last_name: Sanchez Ribot
- first_name: Rohan
full_name: Pokratath, Rohan
last_name: Pokratath
- first_name: Jordi
full_name: Llorca, Jordi
last_name: Llorca
- first_name: Jonathan
full_name: De Roo, Jonathan
last_name: De Roo
- first_name: Maria
full_name: Ibáñez, Maria
id: 43C61214-F248-11E8-B48F-1D18A9856A87
last_name: Ibáñez
orcid: 0000-0001-5013-2843
citation:
ama: 'Calcabrini M, Van den Eynden D, Sanchez Ribot S, et al. Ligand conversion
in nanocrystal synthesis: The oxidation of alkylamines to fatty acids by nitrate.
JACS Au. 2021;1(11):1898-1903. doi:10.1021/jacsau.1c00349'
apa: 'Calcabrini, M., Van den Eynden, D., Sanchez Ribot, S., Pokratath, R., Llorca,
J., De Roo, J., & Ibáñez, M. (2021). Ligand conversion in nanocrystal synthesis:
The oxidation of alkylamines to fatty acids by nitrate. JACS Au. American
Chemical Society. https://doi.org/10.1021/jacsau.1c00349'
chicago: 'Calcabrini, Mariano, Dietger Van den Eynden, Sergi Sanchez Ribot, Rohan
Pokratath, Jordi Llorca, Jonathan De Roo, and Maria Ibáñez. “Ligand Conversion
in Nanocrystal Synthesis: The Oxidation of Alkylamines to Fatty Acids by Nitrate.”
JACS Au. American Chemical Society, 2021. https://doi.org/10.1021/jacsau.1c00349.'
ieee: 'M. Calcabrini et al., “Ligand conversion in nanocrystal synthesis:
The oxidation of alkylamines to fatty acids by nitrate,” JACS Au, vol.
1, no. 11. American Chemical Society, pp. 1898–1903, 2021.'
ista: 'Calcabrini M, Van den Eynden D, Sanchez Ribot S, Pokratath R, Llorca J, De
Roo J, Ibáñez M. 2021. Ligand conversion in nanocrystal synthesis: The oxidation
of alkylamines to fatty acids by nitrate. JACS Au. 1(11), 1898–1903.'
mla: 'Calcabrini, Mariano, et al. “Ligand Conversion in Nanocrystal Synthesis: The
Oxidation of Alkylamines to Fatty Acids by Nitrate.” JACS Au, vol. 1, no.
11, American Chemical Society, 2021, pp. 1898–903, doi:10.1021/jacsau.1c00349.'
short: M. Calcabrini, D. Van den Eynden, S. Sanchez Ribot, R. Pokratath, J. Llorca,
J. De Roo, M. Ibáñez, JACS Au 1 (2021) 1898–1903.
corr_author: '1'
date_created: 2022-03-02T15:24:16Z
date_published: 2021-11-22T00:00:00Z
date_updated: 2026-04-07T13:26:13Z
day: '22'
ddc:
- '540'
department:
- _id: MaIb
doi: 10.1021/jacsau.1c00349
ec_funded: 1
file:
- access_level: open_access
checksum: 1c66a35369e911312a359111420318a9
content_type: application/pdf
creator: cchlebak
date_created: 2022-03-02T15:33:18Z
date_updated: 2022-03-02T15:33:18Z
file_id: '10807'
file_name: 2021_JACSAu_Calcabrini.pdf
file_size: 1257973
relation: main_file
success: 1
file_date_updated: 2022-03-02T15:33:18Z
has_accepted_license: '1'
intvolume: ' 1'
issue: '11'
keyword:
- general medicine
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
page: 1898-1903
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
- _id: 9B8F7476-BA93-11EA-9121-9846C619BF3A
name: 'HighTE: The Werner Siemens Laboratory for the High Throughput Discovery of
Semiconductors for Waste Heat Recovery'
- _id: B67AFEDC-15C9-11EA-A837-991A96BB2854
name: IST Austria Open Access Fund
publication: JACS Au
publication_identifier:
eissn:
- 2691-3704
issn:
- 2691-3704
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
related_material:
link:
- relation: earlier_version
url: https://doi.org/10.26434/chemrxiv-2021-cn2fr
record:
- id: '12885'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: 'Ligand conversion in nanocrystal synthesis: The oxidation of alkylamines to
fatty acids by nitrate'
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: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 1
year: '2021'
...
---
_id: '7685'
abstract:
- lang: eng
text: We consider a gas of interacting bosons trapped in a box of side length one
in the Gross–Pitaevskii limit. We review the proof of the validity of Bogoliubov’s
prediction for the ground state energy and the low-energy excitation spectrum.
This note is based on joint work with C. Brennecke, S. Cenatiempo and B. Schlein.
article_number: '2060006'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Chiara
full_name: Boccato, Chiara
id: 342E7E22-F248-11E8-B48F-1D18A9856A87
last_name: Boccato
citation:
ama: Boccato C. The excitation spectrum of the Bose gas in the Gross-Pitaevskii
regime. Reviews in Mathematical Physics. 2021;33(1). doi:10.1142/S0129055X20600065
apa: Boccato, C. (2021). The excitation spectrum of the Bose gas in the Gross-Pitaevskii
regime. Reviews in Mathematical Physics. World Scientific Publishing. https://doi.org/10.1142/S0129055X20600065
chicago: Boccato, Chiara. “The Excitation Spectrum of the Bose Gas in the Gross-Pitaevskii
Regime.” Reviews in Mathematical Physics. World Scientific Publishing,
2021. https://doi.org/10.1142/S0129055X20600065.
ieee: C. Boccato, “The excitation spectrum of the Bose gas in the Gross-Pitaevskii
regime,” Reviews in Mathematical Physics, vol. 33, no. 1. World Scientific
Publishing, 2021.
ista: Boccato C. 2021. The excitation spectrum of the Bose gas in the Gross-Pitaevskii
regime. Reviews in Mathematical Physics. 33(1), 2060006.
mla: Boccato, Chiara. “The Excitation Spectrum of the Bose Gas in the Gross-Pitaevskii
Regime.” Reviews in Mathematical Physics, vol. 33, no. 1, 2060006, World
Scientific Publishing, 2021, doi:10.1142/S0129055X20600065.
short: C. Boccato, Reviews in Mathematical Physics 33 (2021).
date_created: 2020-04-26T22:00:45Z
date_published: 2021-01-01T00:00:00Z
date_updated: 2025-05-14T10:49:57Z
day: '01'
department:
- _id: RoSe
doi: 10.1142/S0129055X20600065
ec_funded: 1
external_id:
arxiv:
- '2001.00497'
isi:
- '000613313200007'
intvolume: ' 33'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2001.00497
month: '01'
oa: 1
oa_version: Preprint
project:
- _id: 25C6DC12-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '694227'
name: Analysis of quantum many-body systems
publication: Reviews in Mathematical Physics
publication_identifier:
issn:
- 0129-055X
publication_status: published
publisher: World Scientific Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: The excitation spectrum of the Bose gas in the Gross-Pitaevskii regime
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 33
year: '2021'
...
---
_id: '7900'
abstract:
- lang: eng
text: Hartree–Fock theory has been justified as a mean-field approximation for fermionic
systems. However, it suffers from some defects in predicting physical properties,
making necessary a theory of quantum correlations. Recently, bosonization of many-body
correlations has been rigorously justified as an upper bound on the correlation
energy at high density with weak interactions. We review the bosonic approximation,
deriving an effective Hamiltonian. We then show that for systems with Coulomb
interaction this effective theory predicts collective excitations (plasmons) in
accordance with the random phase approximation of Bohm and Pines, and with experimental
observation.
article_number: '2060009'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Niels P
full_name: Benedikter, Niels P
id: 3DE6C32A-F248-11E8-B48F-1D18A9856A87
last_name: Benedikter
orcid: 0000-0002-1071-6091
citation:
ama: Benedikter NP. Bosonic collective excitations in Fermi gases. Reviews in
Mathematical Physics. 2021;33(1). doi:10.1142/s0129055x20600090
apa: Benedikter, N. P. (2021). Bosonic collective excitations in Fermi gases. Reviews
in Mathematical Physics. World Scientific Publishing. https://doi.org/10.1142/s0129055x20600090
chicago: Benedikter, Niels P. “Bosonic Collective Excitations in Fermi Gases.” Reviews
in Mathematical Physics. World Scientific Publishing, 2021. https://doi.org/10.1142/s0129055x20600090.
ieee: N. P. Benedikter, “Bosonic collective excitations in Fermi gases,” Reviews
in Mathematical Physics, vol. 33, no. 1. World Scientific Publishing, 2021.
ista: Benedikter NP. 2021. Bosonic collective excitations in Fermi gases. Reviews
in Mathematical Physics. 33(1), 2060009.
mla: Benedikter, Niels P. “Bosonic Collective Excitations in Fermi Gases.” Reviews
in Mathematical Physics, vol. 33, no. 1, 2060009, World Scientific Publishing,
2021, doi:10.1142/s0129055x20600090.
short: N.P. Benedikter, Reviews in Mathematical Physics 33 (2021).
date_created: 2020-05-28T16:47:55Z
date_published: 2021-01-01T00:00:00Z
date_updated: 2025-05-14T10:49:46Z
day: '01'
department:
- _id: RoSe
doi: 10.1142/s0129055x20600090
ec_funded: 1
external_id:
arxiv:
- '1910.08190'
isi:
- '000613313200010'
intvolume: ' 33'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1910.08190
month: '01'
oa: 1
oa_version: Preprint
project:
- _id: 25C6DC12-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '694227'
name: Analysis of quantum many-body systems
publication: Reviews in Mathematical Physics
publication_identifier:
eissn:
- 1793-6659
issn:
- 0129-055X
publication_status: published
publisher: World Scientific Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Bosonic collective excitations in Fermi gases
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 33
year: '2021'
...
---
_id: '7901'
abstract:
- lang: eng
text: We derive rigorously the leading order of the correlation energy of a Fermi
gas in a scaling regime of high density and weak interaction. The result verifies
the prediction of the random-phase approximation. Our proof refines the method
of collective bosonization in three dimensions. We approximately diagonalize an
effective Hamiltonian describing approximately bosonic collective excitations
around the Hartree–Fock state, while showing that gapless and non-collective excitations
have only a negligible effect on the ground state energy.
acknowledgement: We thank Christian Hainzl for helpful discussions and a referee for
very careful reading of the paper and many helpful suggestions. NB and RS were supported
by the European Research Council (ERC) under the European Union’s Horizon 2020 research
and innovation programme (grant agreement No. 694227). Part of the research of NB
was conducted on the RZD18 Nice–Milan–Vienna–Moscow. NB thanks Elliott H. Lieb and
Peter Otte for explanations about the Luttinger model. PTN has received funding
from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under
Germany’s Excellence Strategy (EXC-2111-390814868). MP acknowledges financial support
from the European Research Council (ERC) under the European Union’s Horizon 2020
research and innovation programme (ERC StG MaMBoQ, grant agreement No. 802901).
BS gratefully acknowledges financial support from the NCCR SwissMAP, from the Swiss
National Science Foundation through the Grant “Dynamical and energetic properties
of Bose-Einstein condensates” and from the European Research Council through the
ERC-AdG CLaQS (grant agreement No. 834782). All authors acknowledge support for
workshop participation from Mathematisches Forschungsinstitut Oberwolfach (Leibniz
Association). NB, PTN, BS, and RS acknowledge support for workshop participation
from Fondation des Treilles.
article_processing_charge: Yes (via OA deal)
article_type: original
arxiv: 1
author:
- first_name: Niels P
full_name: Benedikter, Niels P
id: 3DE6C32A-F248-11E8-B48F-1D18A9856A87
last_name: Benedikter
orcid: 0000-0002-1071-6091
- first_name: Phan Thành
full_name: Nam, Phan Thành
last_name: Nam
- first_name: Marcello
full_name: Porta, Marcello
last_name: Porta
- first_name: Benjamin
full_name: Schlein, Benjamin
last_name: Schlein
- first_name: Robert
full_name: Seiringer, Robert
id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
last_name: Seiringer
orcid: 0000-0002-6781-0521
citation:
ama: Benedikter NP, Nam PT, Porta M, Schlein B, Seiringer R. Correlation energy
of a weakly interacting Fermi gas. Inventiones Mathematicae. 2021;225:885-979.
doi:10.1007/s00222-021-01041-5
apa: Benedikter, N. P., Nam, P. T., Porta, M., Schlein, B., & Seiringer, R.
(2021). Correlation energy of a weakly interacting Fermi gas. Inventiones Mathematicae.
Springer. https://doi.org/10.1007/s00222-021-01041-5
chicago: Benedikter, Niels P, Phan Thành Nam, Marcello Porta, Benjamin Schlein,
and Robert Seiringer. “Correlation Energy of a Weakly Interacting Fermi Gas.”
Inventiones Mathematicae. Springer, 2021. https://doi.org/10.1007/s00222-021-01041-5.
ieee: N. P. Benedikter, P. T. Nam, M. Porta, B. Schlein, and R. Seiringer, “Correlation
energy of a weakly interacting Fermi gas,” Inventiones Mathematicae, vol.
225. Springer, pp. 885–979, 2021.
ista: Benedikter NP, Nam PT, Porta M, Schlein B, Seiringer R. 2021. Correlation
energy of a weakly interacting Fermi gas. Inventiones Mathematicae. 225, 885–979.
mla: Benedikter, Niels P., et al. “Correlation Energy of a Weakly Interacting Fermi
Gas.” Inventiones Mathematicae, vol. 225, Springer, 2021, pp. 885–979,
doi:10.1007/s00222-021-01041-5.
short: N.P. Benedikter, P.T. Nam, M. Porta, B. Schlein, R. Seiringer, Inventiones
Mathematicae 225 (2021) 885–979.
date_created: 2020-05-28T16:48:20Z
date_published: 2021-05-03T00:00:00Z
date_updated: 2025-04-14T07:27:00Z
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department:
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title: Correlation energy of a weakly interacting Fermi gas
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