---
_id: '17594'
abstract:
- lang: eng
text: The origin of stellar-mass black hole mergers discovered through gravitational
waves is being widely debated. Mergers in the disks of active galactic nuclei
(AGNs) represent a promising source of origin, with possible observational clues
in the gravitational-wave data. Beyond gravitational waves, a unique signature
of AGN-assisted mergers is electromagnetic emission from the accreting black holes.
Here we show that jets launched by accreting black holes merging in an AGN disk
can be detected as peculiar transients by infrared, optical, and X-ray observatories.
We further show that this emission mechanism can explain the possible associations
between gravitational-wave events and the optical transient ZTF 19abanrhr and
the proposed gamma-ray counterparts GW150914-GBM and LVT151012-GBM. We demonstrate
how these associations, if genuine, can be used to reconstruct the properties
of these events’ environments. Searching for infrared and X-ray counterparts to
similar electromagnetic transients in the future, once host galaxies are localized
by optical observations, could provide a smoking-gun signature of the mergers’
AGN origin.
article_number: '13'
article_processing_charge: No
article_type: original
author:
- first_name: Hiromichi
full_name: Tagawa, Hiromichi
last_name: Tagawa
- first_name: Shigeo S.
full_name: Kimura, Shigeo S.
last_name: Kimura
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: Rosalba
full_name: Perna, Rosalba
last_name: Perna
- first_name: Imre
full_name: Bartos, Imre
last_name: Bartos
citation:
ama: Tagawa H, Kimura SS, Haiman Z, Perna R, Bartos I. Observable signature of merging
stellar-mass black holes in active galactic nuclei. The Astrophysical Journal.
2023;950(1). doi:10.3847/1538-4357/acc4bb
apa: Tagawa, H., Kimura, S. S., Haiman, Z., Perna, R., & Bartos, I. (2023).
Observable signature of merging stellar-mass black holes in active galactic nuclei.
The Astrophysical Journal. American Astronomical Society. https://doi.org/10.3847/1538-4357/acc4bb
chicago: Tagawa, Hiromichi, Shigeo S. Kimura, Zoltán Haiman, Rosalba Perna, and
Imre Bartos. “Observable Signature of Merging Stellar-Mass Black Holes in Active
Galactic Nuclei.” The Astrophysical Journal. American Astronomical Society,
2023. https://doi.org/10.3847/1538-4357/acc4bb.
ieee: H. Tagawa, S. S. Kimura, Z. Haiman, R. Perna, and I. Bartos, “Observable signature
of merging stellar-mass black holes in active galactic nuclei,” The Astrophysical
Journal, vol. 950, no. 1. American Astronomical Society, 2023.
ista: Tagawa H, Kimura SS, Haiman Z, Perna R, Bartos I. 2023. Observable signature
of merging stellar-mass black holes in active galactic nuclei. The Astrophysical
Journal. 950(1), 13.
mla: Tagawa, Hiromichi, et al. “Observable Signature of Merging Stellar-Mass Black
Holes in Active Galactic Nuclei.” The Astrophysical Journal, vol. 950,
no. 1, 13, American Astronomical Society, 2023, doi:10.3847/1538-4357/acc4bb.
short: H. Tagawa, S.S. Kimura, Z. Haiman, R. Perna, I. Bartos, The Astrophysical
Journal 950 (2023).
date_created: 2024-09-05T12:41:47Z
date_published: 2023-06-06T00:00:00Z
date_updated: 2024-09-23T12:36:58Z
day: '06'
doi: 10.3847/1538-4357/acc4bb
extern: '1'
fulldoi: https://doi.org/10.3847/1538-4357/acc4bb
intvolume: ' 950'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.3847/1538-4357/acc4bb
month: '06'
oa: 1
oa_version: Published Version
publication: The Astrophysical Journal
publication_identifier:
issn:
- 0004-637X
- 1538-4357
publication_status: published
publisher: American Astronomical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Observable signature of merging stellar-mass black holes in active galactic
nuclei
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 950
year: '2023'
...
---
_id: '17602'
abstract:
- lang: eng
text: Motivated by the increasing number of detections of merging black holes by
LIGO-VIRGO-KAGRA, black hole (BH) binary mergers in the discs of active galactic
nuclei (AGNs) is investigated as a possible merger channel. In this pathway, BH
encounters in the gas disc form mutually bound BH binary systems through interaction
with the gas in the disc and subsequently inspiral through gravitational torques
induced by the local gas. To determine the feasibility of this merger pathway,
we present the first three-dimensional global hydrodynamic simulations of the
formation and evolution of a stellar-mass BH binaries AGN discs with three different
AGN disc masses and five different initial radial separations. These 15 simulations
show binary capture of prograde and retrograde binaries can be successful in a
range of disc densities including cases well below that of a standard radiatively
efficient alpha disc, identifying that the majority of these captured binaries
are then subsequently hardened by the surrounding gas. The eccentricity evolution
depends strongly on the orbital rotation where prograde binaries are governed
by gravitational torques form their circumbinary mini disc, with eccentricities
being damped, while for retrograde binaries the eccentricities are excited to
>∼ 0.9 by accretion torques. In two cases, retrograde binaries ultimately undergo
a close periapsis passage which results in a merger via gravitational waves after
only a few thousand binary orbits. Thus, the merger time-scale can be far shorter
than the AGN disc lifetime. These simulations support an efficient AGN disc merger
pathway for BHs.
article_processing_charge: No
article_type: original
author:
- first_name: Connar
full_name: Rowan, Connar
last_name: Rowan
- first_name: Tjarda
full_name: Boekholt, Tjarda
last_name: Boekholt
- first_name: Bence
full_name: Kocsis, Bence
last_name: Kocsis
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
citation:
ama: 'Rowan C, Boekholt T, Kocsis B, Haiman Z. Black hole binary formation in AGN
discs: from isolation to merger. Monthly Notices of the Royal Astronomical
Society. 2023;524(2):2770-2796. doi:10.1093/mnras/stad1926'
apa: 'Rowan, C., Boekholt, T., Kocsis, B., & Haiman, Z. (2023). Black hole binary
formation in AGN discs: from isolation to merger. Monthly Notices of the Royal
Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/stad1926'
chicago: 'Rowan, Connar, Tjarda Boekholt, Bence Kocsis, and Zoltán Haiman. “Black
Hole Binary Formation in AGN Discs: From Isolation to Merger.” Monthly Notices
of the Royal Astronomical Society. Oxford University Press, 2023. https://doi.org/10.1093/mnras/stad1926.'
ieee: 'C. Rowan, T. Boekholt, B. Kocsis, and Z. Haiman, “Black hole binary formation
in AGN discs: from isolation to merger,” Monthly Notices of the Royal Astronomical
Society, vol. 524, no. 2. Oxford University Press, pp. 2770–2796, 2023.'
ista: 'Rowan C, Boekholt T, Kocsis B, Haiman Z. 2023. Black hole binary formation
in AGN discs: from isolation to merger. Monthly Notices of the Royal Astronomical
Society. 524(2), 2770–2796.'
mla: 'Rowan, Connar, et al. “Black Hole Binary Formation in AGN Discs: From Isolation
to Merger.” Monthly Notices of the Royal Astronomical Society, vol. 524,
no. 2, Oxford University Press, 2023, pp. 2770–96, doi:10.1093/mnras/stad1926.'
short: C. Rowan, T. Boekholt, B. Kocsis, Z. Haiman, Monthly Notices of the Royal
Astronomical Society 524 (2023) 2770–2796.
date_created: 2024-09-05T13:09:11Z
date_published: 2023-07-03T00:00:00Z
date_updated: 2024-09-23T13:42:19Z
day: '03'
doi: 10.1093/mnras/stad1926
extern: '1'
fulldoi: https://doi.org/10.1093/mnras/stad1926
intvolume: ' 524'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1093/mnras/stad1926
month: '07'
oa: 1
oa_version: Published Version
page: 2770-2796
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
issn:
- 0035-8711
- 1365-2966
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Black hole binary formation in AGN discs: from isolation to merger'
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 524
year: '2023'
...
---
_id: '17606'
abstract:
- lang: eng
text: We present the first results from the JWST ASPIRE program (A SPectroscopic
survey of biased halos In the Reionization Era). This program represents an imaging
and spectroscopic survey of 25 reionization-era quasars and their environments
by utilizing the unprecedented capabilities of NIRCam Wide Field Slitless Spectroscopy
(WFSS) mode. ASPIRE will deliver the largest (∼280 arcmin^2) galaxy redshift survey
at 3-4 μm among JWST Cycle-1 programs and provide extensive legacy values for
studying the formation of the earliest supermassive black holes (SMBHs), the assembly
of galaxies, early metal enrichment, and cosmic reionization. In this first ASPIRE
paper, we report the discovery of a filamentary structure traced by the luminous
quasar J0305-3150 and ten [OIII] emitters at z=6.6. This structure has a 3D galaxy
overdensity of δgal=12.6 over 637 cMpc3, one of the most overdense structures
known in the early universe, and could eventually evolve into a massive galaxy
cluster. Together with existing VLT/MUSE and ALMA observations of this field,
our JWST observations reveal that J0305-3150 traces a complex environment where
both UV-bright and dusty galaxies are present, and indicate that the early evolution
of galaxies around the quasar is not simultaneous. In addition, we discovered
31 [OIII] emitters in this field at other redshifts, 5.3The Astrophysical Journal Letters. 2023;951(1). doi:10.3847/2041-8213/accd6f'
apa: 'Wang, F., Yang, J., Hennawi, J. F., Fan, X., Sun, F., Champagne, J. B., …
Zou, S. (2023). A SPectroscopic survey of biased halos in the reionization era
(ASPIRE): JWST reveals a filamentary structure around a z = 6.61 Quasar. The
Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/accd6f'
chicago: 'Wang, Feige, Jinyi Yang, Joseph F. Hennawi, Xiaohui Fan, Fengwu Sun, Jaclyn
B. Champagne, Tiago Costa, et al. “A SPectroscopic Survey of Biased Halos in the
Reionization Era (ASPIRE): JWST Reveals a Filamentary Structure around a z = 6.61
Quasar.” The Astrophysical Journal Letters. American Astronomical Society,
2023. https://doi.org/10.3847/2041-8213/accd6f.'
ieee: 'F. Wang et al., “A SPectroscopic survey of biased halos in the reionization
era (ASPIRE): JWST reveals a filamentary structure around a z = 6.61 Quasar,”
The Astrophysical Journal Letters, vol. 951, no. 1. American Astronomical
Society, 2023.'
ista: 'Wang F, Yang J, Hennawi JF, Fan X, Sun F, Champagne JB, Costa T, Habouzit
M, Endsley R, Li Z, Lin X, Meyer RA, Schindler J, Wu Y, Bañados E, Barth AJ, Bhowmick
AK, Bieri R, Blecha L, Bosman S, Cai Z, Colina L, Connor T, Davies FB, Decarli
R, De Rosa G, Drake AB, Egami E, Eilers A-C, Evans AE, Farina EP, Haiman Z, Jiang
L, Jin X, Jun HD, Kakiichi K, Khusanova Y, Kulkarni G, Li M, Liu W, Loiacono F,
Lupi A, Mazzucchelli C, Onoue M, Pudoka MA, Rojas-Ruiz S, Shen Y, Strauss MA,
Tee WL, Trakhtenbrot B, Trebitsch M, Venemans B, Volonteri M, Walter F, Xie Z-L,
Yue M, Zhang H, Zhang H, Zou S. 2023. A SPectroscopic survey of biased halos in
the reionization era (ASPIRE): JWST reveals a filamentary structure around a z
= 6.61 Quasar. The Astrophysical Journal Letters. 951(1), L4.'
mla: 'Wang, Feige, et al. “A SPectroscopic Survey of Biased Halos in the Reionization
Era (ASPIRE): JWST Reveals a Filamentary Structure around a z = 6.61 Quasar.”
The Astrophysical Journal Letters, vol. 951, no. 1, L4, American Astronomical
Society, 2023, doi:10.3847/2041-8213/accd6f.'
short: F. Wang, J. Yang, J.F. Hennawi, X. Fan, F. Sun, J.B. Champagne, T. Costa,
M. Habouzit, R. Endsley, Z. Li, X. Lin, R.A. Meyer, J. Schindler, Y. Wu, E. Bañados,
A.J. Barth, A.K. Bhowmick, R. Bieri, L. Blecha, S. Bosman, Z. Cai, L. Colina,
T. Connor, F.B. Davies, R. Decarli, G. De Rosa, A.B. Drake, E. Egami, A.-C. Eilers,
A.E. Evans, E.P. Farina, Z. Haiman, L. Jiang, X. Jin, H.D. Jun, K. Kakiichi, Y.
Khusanova, G. Kulkarni, M. Li, W. Liu, F. Loiacono, A. Lupi, C. Mazzucchelli,
M. Onoue, M.A. Pudoka, S. Rojas-Ruiz, Y. Shen, M.A. Strauss, W.L. Tee, B. Trakhtenbrot,
M. Trebitsch, B. Venemans, M. Volonteri, F. Walter, Z.-L. Xie, M. Yue, H. Zhang,
H. Zhang, S. Zou, The Astrophysical Journal Letters 951 (2023).
date_created: 2024-09-05T13:14:46Z
date_published: 2023-06-29T00:00:00Z
date_updated: 2024-09-23T14:08:58Z
day: '29'
doi: 10.3847/2041-8213/accd6f
extern: '1'
fulldoi: https://doi.org/10.3847/2041-8213/accd6f
intvolume: ' 951'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.3847/2041-8213/accd6f
month: '06'
oa: 1
oa_version: Published Version
publication: The Astrophysical Journal Letters
publication_identifier:
issn:
- 2041-8205
- 2041-8213
publication_status: published
publisher: American Astronomical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'A SPectroscopic survey of biased halos in the reionization era (ASPIRE): JWST
reveals a filamentary structure around a z = 6.61 Quasar'
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 951
year: '2023'
...
---
_id: '17611'
abstract:
- lang: eng
text: The project MOMO (Multiwavelength Observations and Modelling of OJ 287) was
set up to test predictions of binary supermassive black hole (SMBH) scenarios
and to understand disc–jet physics of the blazar OJ 287. After a correction, the
precessing binary (PB) SMBH model predicted the next main outburst of OJ 287 in
2022 October, making the outburst well observable and the model testable. We have
densely covered this period in our ongoing multifrequency radio, optical, ultraviolet
(UV), and X-ray monitoring. The predicted outburst was not detected. Instead,
OJ 287 was at low optical–UV emission levels, declining further into November.
The predicted thermal bremsstrahlung spectrum was not observed either, at any
epoch. Further, applying scaling relations, we estimate an SMBH mass of OJ 287
of 108 M⊙. The latest in a sequence of deep low states that recur every 1–2 yr
is used to determine an upper limit on the Eddington ratio and on the accretion-disc
luminosity. This limit is at least a factor of 10 lower than required by the PB
model with its massive primary SMBH of >1010 M⊙. All these results favour
alternative binary SMBH models of OJ 287 that require neither strong orbital precession
nor a very large mass of the primary SMBH.
article_processing_charge: No
article_type: original
author:
- first_name: S
full_name: Komossa, S
last_name: Komossa
- first_name: D
full_name: Grupe, D
last_name: Grupe
- first_name: A
full_name: Kraus, A
last_name: Kraus
- first_name: M A
full_name: Gurwell, M A
last_name: Gurwell
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: F K
full_name: Liu, F K
last_name: Liu
- first_name: A
full_name: Tchekhovskoy, A
last_name: Tchekhovskoy
- first_name: L C
full_name: Gallo, L C
last_name: Gallo
- first_name: M
full_name: Berton, M
last_name: Berton
- first_name: R
full_name: Blandford, R
last_name: Blandford
- first_name: J L
full_name: Gómez, J L
last_name: Gómez
- first_name: A G
full_name: Gonzalez, A G
last_name: Gonzalez
citation:
ama: 'Komossa S, Grupe D, Kraus A, et al. Absence of the predicted 2022 October
outburst of OJ 287 and implications for binary SMBH scenarios. Monthly Notices
of the Royal Astronomical Society: Letters. 2023;522(1):L84-L88. doi:10.1093/mnrasl/slad016'
apa: 'Komossa, S., Grupe, D., Kraus, A., Gurwell, M. A., Haiman, Z., Liu, F. K.,
… Gonzalez, A. G. (2023). Absence of the predicted 2022 October outburst of OJ
287 and implications for binary SMBH scenarios. Monthly Notices of the Royal
Astronomical Society: Letters. Oxford University Press. https://doi.org/10.1093/mnrasl/slad016'
chicago: 'Komossa, S, D Grupe, A Kraus, M A Gurwell, Zoltán Haiman, F K Liu, A Tchekhovskoy,
et al. “Absence of the Predicted 2022 October Outburst of OJ 287 and Implications
for Binary SMBH Scenarios.” Monthly Notices of the Royal Astronomical Society:
Letters. Oxford University Press, 2023. https://doi.org/10.1093/mnrasl/slad016.'
ieee: 'S. Komossa et al., “Absence of the predicted 2022 October outburst
of OJ 287 and implications for binary SMBH scenarios,” Monthly Notices of the
Royal Astronomical Society: Letters, vol. 522, no. 1. Oxford University Press,
pp. L84–L88, 2023.'
ista: 'Komossa S, Grupe D, Kraus A, Gurwell MA, Haiman Z, Liu FK, Tchekhovskoy A,
Gallo LC, Berton M, Blandford R, Gómez JL, Gonzalez AG. 2023. Absence of the predicted
2022 October outburst of OJ 287 and implications for binary SMBH scenarios. Monthly
Notices of the Royal Astronomical Society: Letters. 522(1), L84–L88.'
mla: 'Komossa, S., et al. “Absence of the Predicted 2022 October Outburst of OJ
287 and Implications for Binary SMBH Scenarios.” Monthly Notices of the Royal
Astronomical Society: Letters, vol. 522, no. 1, Oxford University Press, 2023,
pp. L84–88, doi:10.1093/mnrasl/slad016.'
short: 'S. Komossa, D. Grupe, A. Kraus, M.A. Gurwell, Z. Haiman, F.K. Liu, A. Tchekhovskoy,
L.C. Gallo, M. Berton, R. Blandford, J.L. Gómez, A.G. Gonzalez, Monthly Notices
of the Royal Astronomical Society: Letters 522 (2023) L84–L88.'
date_created: 2024-09-05T13:23:29Z
date_published: 2023-02-23T00:00:00Z
date_updated: 2024-09-24T07:22:28Z
day: '23'
doi: 10.1093/mnrasl/slad016
extern: '1'
fulldoi: https://doi.org/10.1093/mnrasl/slad016
intvolume: ' 522'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1093/mnrasl/slad016
month: '02'
oa: 1
oa_version: Published Version
page: L84-L88
publication: 'Monthly Notices of the Royal Astronomical Society: Letters'
publication_identifier:
issn:
- 1745-3925
- 1745-3933
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Absence of the predicted 2022 October outburst of OJ 287 and implications for
binary SMBH scenarios
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 522
year: '2023'
...
---
OA_type: closed access
_id: '17860'
abstract:
- lang: eng
text: Radicals are unique molecular systems for applications in electronic devices
due to their open-shell electronic structures. Radicals can function as good electrical
conductors and switches in molecular circuits while also holding great promise
in the field of molecular spintronics. However, it is both challenging to create
stable, persistent radicals and to understand their properties in molecular junctions.
The goal of this Perspective is to address this dual challenge by providing design
principles for the synthesis of stable radicals relevant to molecular junctions,
as well as offering current insight into the electronic properties of radicals
in single-molecule devices. By exploring both the chemical and physical properties
of established radical systems, we will facilitate increased exploration and development
of radical-based molecular systems.
article_processing_charge: No
article_type: original
author:
- first_name: Liang
full_name: Li, Liang
last_name: Li
- first_name: Claudia R.
full_name: Prindle, Claudia R.
last_name: Prindle
- first_name: Wanzhuo
full_name: Shi, Wanzhuo
last_name: Shi
- first_name: Colin
full_name: Nuckolls, Colin
last_name: Nuckolls
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
citation:
ama: Li L, Prindle CR, Shi W, Nuckolls C, Venkataraman L. Radical single-molecule
junctions. Journal of the American Chemical Society. 2023;145(33):18182-18204.
doi:10.1021/jacs.3c04487
apa: Li, L., Prindle, C. R., Shi, W., Nuckolls, C., & Venkataraman, L. (2023).
Radical single-molecule junctions. Journal of the American Chemical Society.
American Chemical Society. https://doi.org/10.1021/jacs.3c04487
chicago: Li, Liang, Claudia R. Prindle, Wanzhuo Shi, Colin Nuckolls, and Latha Venkataraman.
“Radical Single-Molecule Junctions.” Journal of the American Chemical Society.
American Chemical Society, 2023. https://doi.org/10.1021/jacs.3c04487.
ieee: L. Li, C. R. Prindle, W. Shi, C. Nuckolls, and L. Venkataraman, “Radical single-molecule
junctions,” Journal of the American Chemical Society, vol. 145, no. 33.
American Chemical Society, pp. 18182–18204, 2023.
ista: Li L, Prindle CR, Shi W, Nuckolls C, Venkataraman L. 2023. Radical single-molecule
junctions. Journal of the American Chemical Society. 145(33), 18182–18204.
mla: Li, Liang, et al. “Radical Single-Molecule Junctions.” Journal of the American
Chemical Society, vol. 145, no. 33, American Chemical Society, 2023, pp. 18182–204,
doi:10.1021/jacs.3c04487.
short: L. Li, C.R. Prindle, W. Shi, C. Nuckolls, L. Venkataraman, Journal of the
American Chemical Society 145 (2023) 18182–18204.
date_created: 2024-09-06T12:49:27Z
date_published: 2023-09-23T00:00:00Z
date_updated: 2025-12-10T12:29:11Z
day: '23'
doi: 10.1021/jacs.3c04487
extern: '1'
external_id:
pmid:
- '37555594'
fulldoi: https://doi.org/10.1021/jacs.3c04487
intvolume: ' 145'
issue: '33'
language:
- iso: eng
month: '09'
oa_version: None
page: 18182-18204
pmid: 1
publication: Journal of the American Chemical Society
publication_identifier:
eissn:
- 1520-5126
issn:
- 0002-7863
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Radical single-molecule junctions
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 145
year: '2023'
...
---
OA_type: closed access
_id: '17861'
abstract:
- lang: eng
text: 'Molecular one-dimensional topological insulators (1D TIs), described by the
Su-Schrieffer-Heeger (SSH) model, are a new class of molecular electronic wires
whose low-energy topological edge states endow them with high electrical conductivity.
However, when these 1D TIs become long, the high conductance is not sustained
because the coupling between the edge states decreases with increasing length.
Here, we present a new design where we connect multiple short 1D SSH TI units
linearly or in a cycle to create molecular wires with a continuous topological
state density. Using a tight-binding method, we show that the linear system gives
a length-independent conductance. The cyclic systems show an interesting odd-even
effect, with unit transmission in the topological limit, but zero transmission
in the trivial limit. Furthermore, based on our calculations, we predict that
these systems can support resonant transmission with a quantum of conductance.
We can further expand these results to phenylene-based linear and cyclic 1D TI
systems and confirm the length-dependent conductance in such systems. '
article_processing_charge: No
article_type: original
author:
- first_name: Liang
full_name: Li, Liang
last_name: Li
- first_name: Colin
full_name: Nuckolls, Colin
last_name: Nuckolls
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
citation:
ama: Li L, Nuckolls C, Venkataraman L. Designing long and highly conducting molecular
wires with multiple nontrivial topological states. The Journal of Physical
Chemistry Letters. 2023;14(22):5141-5147. doi:10.1021/acs.jpclett.3c01081
apa: Li, L., Nuckolls, C., & Venkataraman, L. (2023). Designing long and highly
conducting molecular wires with multiple nontrivial topological states. The
Journal of Physical Chemistry Letters. American Chemical Society. https://doi.org/10.1021/acs.jpclett.3c01081
chicago: Li, Liang, Colin Nuckolls, and Latha Venkataraman. “Designing Long and
Highly Conducting Molecular Wires with Multiple Nontrivial Topological States.”
The Journal of Physical Chemistry Letters. American Chemical Society, 2023.
https://doi.org/10.1021/acs.jpclett.3c01081.
ieee: L. Li, C. Nuckolls, and L. Venkataraman, “Designing long and highly conducting
molecular wires with multiple nontrivial topological states,” The Journal of
Physical Chemistry Letters, vol. 14, no. 22. American Chemical Society, pp.
5141–5147, 2023.
ista: Li L, Nuckolls C, Venkataraman L. 2023. Designing long and highly conducting
molecular wires with multiple nontrivial topological states. The Journal of Physical
Chemistry Letters. 14(22), 5141–5147.
mla: Li, Liang, et al. “Designing Long and Highly Conducting Molecular Wires with
Multiple Nontrivial Topological States.” The Journal of Physical Chemistry
Letters, vol. 14, no. 22, American Chemical Society, 2023, pp. 5141–47, doi:10.1021/acs.jpclett.3c01081.
short: L. Li, C. Nuckolls, L. Venkataraman, The Journal of Physical Chemistry Letters
14 (2023) 5141–5147.
date_created: 2024-09-06T12:50:23Z
date_published: 2023-05-30T00:00:00Z
date_updated: 2025-01-03T11:36:41Z
day: '30'
doi: 10.1021/acs.jpclett.3c01081
extern: '1'
external_id:
pmid:
- '37252687'
fulldoi: https://doi.org/10.1021/acs.jpclett.3c01081
intvolume: ' 14'
issue: '22'
language:
- iso: eng
month: '05'
oa_version: None
page: 5141-5147
pmid: 1
publication: The Journal of Physical Chemistry Letters
publication_identifier:
eissn:
- 1948-7185
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Designing long and highly conducting molecular wires with multiple nontrivial
topological states
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 14
year: '2023'
...
---
_id: '17862'
abstract:
- lang: eng
text: Electric field acceleration of alkyl hydroperoxide activation to acylate amines
in the scanning tunneling microscope-based break-junction is reported. Alkyl hydroperoxide
mixtures, generated from hydrocarbon autoxidation in air, were found to be competent
reagents for the functionalization of gold surfaces. Intermolecular coupling on
the surface in the presence of amines was observed, yielding normal alkylamides.
This novel mode of alkyl hydroperoxide activation to generate acylium equivalents
was found to be responsive to the magnitude of the bias in the break junction,
indicating an electric field influence on this novel reactivity.
article_processing_charge: No
article_type: original
author:
- first_name: Xiye
full_name: Wang, Xiye
last_name: Wang
- first_name: Boyuan
full_name: Zhang, Boyuan
last_name: Zhang
- first_name: Brandon
full_name: Fowler, Brandon
last_name: Fowler
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
- first_name: Tomislav
full_name: Rovis, Tomislav
last_name: Rovis
citation:
ama: Wang X, Zhang B, Fowler B, Venkataraman L, Rovis T. Alkane solvent-derived
acylation reaction driven by electric fields. Journal of the American Chemical
Society. 2023;145(22):11903-11906. doi:10.1021/jacs.3c02064
apa: Wang, X., Zhang, B., Fowler, B., Venkataraman, L., & Rovis, T. (2023).
Alkane solvent-derived acylation reaction driven by electric fields. Journal
of the American Chemical Society. American Chemical Society. https://doi.org/10.1021/jacs.3c02064
chicago: Wang, Xiye, Boyuan Zhang, Brandon Fowler, Latha Venkataraman, and Tomislav
Rovis. “Alkane Solvent-Derived Acylation Reaction Driven by Electric Fields.”
Journal of the American Chemical Society. American Chemical Society, 2023.
https://doi.org/10.1021/jacs.3c02064.
ieee: X. Wang, B. Zhang, B. Fowler, L. Venkataraman, and T. Rovis, “Alkane solvent-derived
acylation reaction driven by electric fields,” Journal of the American Chemical
Society, vol. 145, no. 22. American Chemical Society, pp. 11903–11906, 2023.
ista: Wang X, Zhang B, Fowler B, Venkataraman L, Rovis T. 2023. Alkane solvent-derived
acylation reaction driven by electric fields. Journal of the American Chemical
Society. 145(22), 11903–11906.
mla: Wang, Xiye, et al. “Alkane Solvent-Derived Acylation Reaction Driven by Electric
Fields.” Journal of the American Chemical Society, vol. 145, no. 22, American
Chemical Society, 2023, pp. 11903–06, doi:10.1021/jacs.3c02064.
short: X. Wang, B. Zhang, B. Fowler, L. Venkataraman, T. Rovis, Journal of the American
Chemical Society 145 (2023) 11903–11906.
date_created: 2024-09-06T12:55:12Z
date_published: 2023-05-25T00:00:00Z
date_updated: 2024-11-25T12:29:49Z
day: '25'
doi: 10.1021/jacs.3c02064
extern: '1'
external_id:
pmid:
- '37227235'
fulldoi: https://doi.org/10.1021/jacs.3c02064
intvolume: ' 145'
issue: '22'
language:
- iso: eng
month: '05'
oa_version: None
page: 11903-11906
pmid: 1
publication: Journal of the American Chemical Society
publication_identifier:
eissn:
- 1520-5126
issn:
- 0002-7863
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Alkane solvent-derived acylation reaction driven by electric fields
type: journal_article
user_id: 68b8ca59-c5b3-11ee-8790-cd641c68093d
volume: 145
year: '2023'
...
---
OA_place: publisher
OA_type: gold
_id: '17863'
abstract:
- lang: eng
text: Understanding and tuning charge transport over a single molecule is a fundamental
topic in molecular electronics. Single-molecule junctions composed of individual
molecules attached to two electrodes are the most common components built for
single-molecule charge transport studies. During the past two decades, rapid technical
and theoretical advances in single-molecule junctions have increased our understanding
of the conductance properties and functions of molecular devices. In this perspective
article, we introduce the basic principles of charge transport in single-molecule
junctions, then give an overview of recent progress in modulating single-molecule
transport through external stimuli such as electric field and potential, light,
mechanical force, heat, and chemical environment. Lastly, we discuss challenges
and offer views on future developments in molecular electronics.
article_number: '100115'
article_processing_charge: No
article_type: original
author:
- first_name: Qi
full_name: Zou, Qi
last_name: Zou
- first_name: Jin
full_name: Qiu, Jin
last_name: Qiu
- first_name: Yaping
full_name: Zang, Yaping
last_name: Zang
- first_name: He
full_name: Tian, He
last_name: Tian
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
citation:
ama: Zou Q, Qiu J, Zang Y, Tian H, Venkataraman L. Modulating single-molecule charge
transport through external stimulus. eScience. 2023;3(3). doi:10.1016/j.esci.2023.100115
apa: Zou, Q., Qiu, J., Zang, Y., Tian, H., & Venkataraman, L. (2023). Modulating
single-molecule charge transport through external stimulus. EScience. Elsevier
BV. https://doi.org/10.1016/j.esci.2023.100115
chicago: Zou, Qi, Jin Qiu, Yaping Zang, He Tian, and Latha Venkataraman. “Modulating
Single-Molecule Charge Transport through External Stimulus.” EScience.
Elsevier BV, 2023. https://doi.org/10.1016/j.esci.2023.100115.
ieee: Q. Zou, J. Qiu, Y. Zang, H. Tian, and L. Venkataraman, “Modulating single-molecule
charge transport through external stimulus,” eScience, vol. 3, no. 3. Elsevier
BV, 2023.
ista: Zou Q, Qiu J, Zang Y, Tian H, Venkataraman L. 2023. Modulating single-molecule
charge transport through external stimulus. eScience. 3(3), 100115.
mla: Zou, Qi, et al. “Modulating Single-Molecule Charge Transport through External
Stimulus.” EScience, vol. 3, no. 3, 100115, Elsevier BV, 2023, doi:10.1016/j.esci.2023.100115.
short: Q. Zou, J. Qiu, Y. Zang, H. Tian, L. Venkataraman, EScience 3 (2023).
date_created: 2024-09-06T12:56:54Z
date_published: 2023-05-01T00:00:00Z
date_updated: 2024-11-25T12:41:14Z
doi: 10.1016/j.esci.2023.100115
extern: '1'
fulldoi: https://doi.org/10.1016/j.esci.2023.100115
intvolume: ' 3'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sciencedirect.com/science/article/pii/S2667141723000332?via%3Dihub
month: '05'
oa: 1
oa_version: Published Version
publication: eScience
publication_identifier:
eissn:
- 2667-1417
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
scopus_import: '1'
status: public
title: Modulating single-molecule charge transport through external stimulus
type: journal_article
user_id: 68b8ca59-c5b3-11ee-8790-cd641c68093d
volume: 3
year: '2023'
...
---
OA_type: closed access
_id: '17864'
abstract:
- lang: eng
text: 'Molecular one-dimensional topological insulators (1D TIs), which conduct
through energetically low-lying topological edge states, can be extremely highly
conducting and exhibit a reversed conductance decay, affording them great potential
as building blocks for nanoelectronic devices. However, these properties can only
be observed at the short length limit. To extend the length at which these anomalous
effects can be observed, we design topological oligo[n]emeraldine wires using
short 1D TIs as building blocks. As the wire length increases, the number of topological
states increases, enabling an increased electronic transmission along the wire;
specifically, we show that we can drive over a microampere current through a single
∼5 nm molecular wire, appreciably more than what has been observed in other long
wires reported to date. Calculations and experiments show that the longest oligo[7]emeraldine
with doped topological states has over 106 enhancements in the transmission compared
to its pristine form. The discovery of these highly conductive, long organic wires
helps overcome a fundamental hurdle to implementing molecules in complex, nanoscale
circuitry: their structures become too insulating at lengths that are useful in
designing nanoscale circuits.'
article_processing_charge: No
author:
- first_name: Liang
full_name: Li, Liang
last_name: Li
- first_name: Shayan
full_name: Louie, Shayan
last_name: Louie
- first_name: Austin M.
full_name: Evans, Austin M.
last_name: Evans
- first_name: Elena
full_name: Meirzadeh, Elena
last_name: Meirzadeh
- first_name: Colin
full_name: Nuckolls, Colin
last_name: Nuckolls
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
citation:
ama: Li L, Louie S, Evans AM, Meirzadeh E, Nuckolls C, Venkataraman L. Topological
radical pairs produce ultrahigh conductance in long molecular wires. Journal
of the American Chemical Society. 2023;145(4):2492-2498. doi:10.1021/jacs.2c12059
apa: Li, L., Louie, S., Evans, A. M., Meirzadeh, E., Nuckolls, C., & Venkataraman,
L. (2023). Topological radical pairs produce ultrahigh conductance in long molecular
wires. Journal of the American Chemical Society. American Chemical Society.
https://doi.org/10.1021/jacs.2c12059
chicago: Li, Liang, Shayan Louie, Austin M. Evans, Elena Meirzadeh, Colin Nuckolls,
and Latha Venkataraman. “Topological Radical Pairs Produce Ultrahigh Conductance
in Long Molecular Wires.” Journal of the American Chemical Society. American
Chemical Society, 2023. https://doi.org/10.1021/jacs.2c12059.
ieee: L. Li, S. Louie, A. M. Evans, E. Meirzadeh, C. Nuckolls, and L. Venkataraman,
“Topological radical pairs produce ultrahigh conductance in long molecular wires,”
Journal of the American Chemical Society, vol. 145, no. 4. American Chemical
Society, pp. 2492–2498, 2023.
ista: Li L, Louie S, Evans AM, Meirzadeh E, Nuckolls C, Venkataraman L. 2023. Topological
radical pairs produce ultrahigh conductance in long molecular wires. Journal of
the American Chemical Society. 145(4), 2492–2498.
mla: Li, Liang, et al. “Topological Radical Pairs Produce Ultrahigh Conductance
in Long Molecular Wires.” Journal of the American Chemical Society, vol.
145, no. 4, American Chemical Society, 2023, pp. 2492–98, doi:10.1021/jacs.2c12059.
short: L. Li, S. Louie, A.M. Evans, E. Meirzadeh, C. Nuckolls, L. Venkataraman,
Journal of the American Chemical Society 145 (2023) 2492–2498.
date_created: 2024-09-06T12:57:45Z
date_published: 2023-01-23T00:00:00Z
date_updated: 2024-11-25T14:21:10Z
day: '23'
doi: 10.1021/jacs.2c12059
extern: '1'
external_id:
pmid:
- '36689781'
fulldoi: https://doi.org/10.1021/jacs.2c12059
intvolume: ' 145'
issue: '4'
language:
- iso: eng
month: '01'
oa_version: None
page: 2492-2498
pmid: 1
publication: Journal of the American Chemical Society
publication_identifier:
eissn:
- 1520-5126
issn:
- 0002-7863
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Topological radical pairs produce ultrahigh conductance in long molecular wires
type: journal_article
user_id: 68b8ca59-c5b3-11ee-8790-cd641c68093d
volume: 145
year: '2023'
...
---
OA_type: closed access
_id: '17865'
abstract:
- lang: eng
text: Understanding how molecular geometry affects the electronic properties of
single-molecule junctions experimentally has been challenging. Typically, metal–molecule–metal
junctions are measured using a break-junction method where electrode separation
is mechanically evolving during measurement. Here, to probe the impact of the
junction geometry on conductance, we apply a sinusoidal modulation to the molecular
junction electrode position. Simultaneously, we probe the nonlinearity of the
current–voltage characteristics of each junction through a modulation in the applied
bias at a different frequency. In turn, we show that junctions formed with molecules
that have different molecule–electrode interfaces exhibit statistically distinguishable
Fourier-transformed conductances. In particular, we find a marked bias dependence
for the modulation of junctions where transmission is mediated thorough the van
der Waals (vdW) interaction. We attribute our findings to voltage-modulated vdW
interactions at the single-molecule level.
article_processing_charge: No
article_type: original
author:
- first_name: Yujing
full_name: Wei, Yujing
last_name: Wei
- first_name: Liang
full_name: Li, Liang
last_name: Li
- first_name: Julia E.
full_name: Greenwald, Julia E.
last_name: Greenwald
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
citation:
ama: Wei Y, Li L, Greenwald JE, Venkataraman L. Voltage-modulated van der waals
interaction in single-molecule junctions. Nano Letters. 2023;23(2):567-572.
doi:10.1021/acs.nanolett.2c04098
apa: Wei, Y., Li, L., Greenwald, J. E., & Venkataraman, L. (2023). Voltage-modulated
van der waals interaction in single-molecule junctions. Nano Letters. American
Chemical Society. https://doi.org/10.1021/acs.nanolett.2c04098
chicago: Wei, Yujing, Liang Li, Julia E. Greenwald, and Latha Venkataraman. “Voltage-Modulated
van Der Waals Interaction in Single-Molecule Junctions.” Nano Letters.
American Chemical Society, 2023. https://doi.org/10.1021/acs.nanolett.2c04098.
ieee: Y. Wei, L. Li, J. E. Greenwald, and L. Venkataraman, “Voltage-modulated van
der waals interaction in single-molecule junctions,” Nano Letters, vol.
23, no. 2. American Chemical Society, pp. 567–572, 2023.
ista: Wei Y, Li L, Greenwald JE, Venkataraman L. 2023. Voltage-modulated van der
waals interaction in single-molecule junctions. Nano Letters. 23(2), 567–572.
mla: Wei, Yujing, et al. “Voltage-Modulated van Der Waals Interaction in Single-Molecule
Junctions.” Nano Letters, vol. 23, no. 2, American Chemical Society, 2023,
pp. 567–72, doi:10.1021/acs.nanolett.2c04098.
short: Y. Wei, L. Li, J.E. Greenwald, L. Venkataraman, Nano Letters 23 (2023) 567–572.
date_created: 2024-09-06T12:58:41Z
date_published: 2023-01-05T00:00:00Z
date_updated: 2024-11-25T14:49:19Z
day: '05'
doi: 10.1021/acs.nanolett.2c04098
extern: '1'
external_id:
pmid:
- '36602221'
fulldoi: https://doi.org/10.1021/acs.nanolett.2c04098
intvolume: ' 23'
issue: '2'
language:
- iso: eng
month: '01'
oa_version: None
page: 567-572
pmid: 1
publication: Nano Letters
publication_identifier:
eissn:
- 1530-6992
issn:
- 1530-6984
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
status: public
title: Voltage-modulated van der waals interaction in single-molecule junctions
type: journal_article
user_id: 68b8ca59-c5b3-11ee-8790-cd641c68093d
volume: 23
year: '2023'
...
---
OA_place: publisher
OA_type: gold
_id: '17866'
abstract:
- lang: eng
text: Electric fields have been used to control and direct chemical reactions in
biochemistry and enzymatic catalysis, yet directly applying external electric
fields to activate reactions in bulk solution and to characterize them ex situ
remains a challenge. Here we utilize the scanning tunneling microscope-based break-junction
technique to investigate the electric field driven homolytic cleavage of the radical
initiator 4-(methylthio)benzoic peroxyanhydride at ambient temperatures in bulk
solution, without the use of co-initiators or photochemical activators. Through
time-dependent ex situ quantification by high performance liquid chromatography
using a UV-vis detector, we find that the electric field catalyzes the reaction.
Importantly, we demonstrate that the reaction rate in a field increases linearly
with the solvent dielectric constant. Using density functional theory calculations,
we show that the applied electric field decreases the dissociation energy of the
O–O bond and stabilizes the product relative to the reactant due to their different
dipole moments.
article_processing_charge: Yes
article_type: original
author:
- first_name: Boyuan
full_name: Zhang, Boyuan
last_name: Zhang
- first_name: Cedric
full_name: Schaack, Cedric
last_name: Schaack
- first_name: Claudia R.
full_name: Prindle, Claudia R.
last_name: Prindle
- first_name: Ethan A.
full_name: Vo, Ethan A.
last_name: Vo
- first_name: Miriam
full_name: Aziz, Miriam
last_name: Aziz
- first_name: Michael L.
full_name: Steigerwald, Michael L.
last_name: Steigerwald
- first_name: Timothy C.
full_name: Berkelbach, Timothy C.
last_name: Berkelbach
- first_name: Colin
full_name: Nuckolls, Colin
last_name: Nuckolls
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
citation:
ama: Zhang B, Schaack C, Prindle CR, et al. Electric fields drive bond homolysis.
Chemical Science. 2023;14(7):1769-1774. doi:10.1039/d2sc06411a
apa: Zhang, B., Schaack, C., Prindle, C. R., Vo, E. A., Aziz, M., Steigerwald, M.
L., … Venkataraman, L. (2023). Electric fields drive bond homolysis. Chemical
Science. Royal Society of Chemistry. https://doi.org/10.1039/d2sc06411a
chicago: Zhang, Boyuan, Cedric Schaack, Claudia R. Prindle, Ethan A. Vo, Miriam
Aziz, Michael L. Steigerwald, Timothy C. Berkelbach, Colin Nuckolls, and Latha
Venkataraman. “Electric Fields Drive Bond Homolysis.” Chemical Science.
Royal Society of Chemistry, 2023. https://doi.org/10.1039/d2sc06411a.
ieee: B. Zhang et al., “Electric fields drive bond homolysis,” Chemical
Science, vol. 14, no. 7. Royal Society of Chemistry, pp. 1769–1774, 2023.
ista: Zhang B, Schaack C, Prindle CR, Vo EA, Aziz M, Steigerwald ML, Berkelbach
TC, Nuckolls C, Venkataraman L. 2023. Electric fields drive bond homolysis. Chemical
Science. 14(7), 1769–1774.
mla: Zhang, Boyuan, et al. “Electric Fields Drive Bond Homolysis.” Chemical Science,
vol. 14, no. 7, Royal Society of Chemistry, 2023, pp. 1769–74, doi:10.1039/d2sc06411a.
short: B. Zhang, C. Schaack, C.R. Prindle, E.A. Vo, M. Aziz, M.L. Steigerwald, T.C.
Berkelbach, C. Nuckolls, L. Venkataraman, Chemical Science 14 (2023) 1769–1774.
date_created: 2024-09-06T12:59:45Z
date_published: 2023-01-16T00:00:00Z
date_updated: 2024-11-25T15:01:40Z
day: '16'
doi: 10.1039/d2sc06411a
extern: '1'
external_id:
pmid:
- '36819847'
fulldoi: https://doi.org/10.1039/d2sc06411a
intvolume: ' 14'
issue: '7'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://europepmc.org/article/pmc/pmc9931054
month: '01'
oa: 1
oa_version: Published Version
page: 1769-1774
pmid: 1
publication: Chemical Science
publication_identifier:
eissn:
- 2041-6539
issn:
- 2041-6520
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
status: public
title: Electric fields drive bond homolysis
type: journal_article
user_id: 68b8ca59-c5b3-11ee-8790-cd641c68093d
volume: 14
year: '2023'
...
---
_id: '18189'
abstract:
- lang: eng
text: 'Strongly interacting topological matter1 exhibits fundamentally new phenomena
with potential applications in quantum information technology2,3. Emblematic instances
are fractional quantum Hall (FQH) states4, in which the interplay of a magnetic
field and strong interactions gives rise to fractionally charged quasi-particles,
long-ranged entanglement and anyonic exchange statistics. Progress in engineering
synthetic magnetic fields5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21 has raised
the hope to create these exotic states in controlled quantum systems. However,
except for a recent Laughlin state of light22, preparing FQH states in engineered
systems remains elusive. Here we realize a FQH state with ultracold atoms in an
optical lattice. The state is a lattice version of a bosonic ν = 1/2 Laughlin
state4,23 with two particles on 16 sites. This minimal system already captures
many hallmark features of Laughlin-type FQH states24,25,26,27,28: we observe a
suppression of two-body interactions, we find a distinctive vortex structure in
the density correlations and we measure a fractional Hall conductivity of σH/σ0 = 0.6(2)
by means of the bulk response to a magnetic perturbation. Furthermore, by tuning
the magnetic field, we map out the transition point between the normal and the
FQH regime through a spectroscopic investigation of the many-body gap. Our work
provides a starting point for exploring highly entangled topological matter with
ultracold atoms29,30,31,32,33.'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Julian
full_name: Leonard, Julian
id: b75b3f45-7995-11ef-9bfd-9a9cd02c3577
last_name: Leonard
- first_name: Sooshin
full_name: Kim, Sooshin
last_name: Kim
- first_name: Joyce
full_name: Kwan, Joyce
last_name: Kwan
- first_name: Perrin
full_name: Segura, Perrin
last_name: Segura
- first_name: Fabian
full_name: Grusdt, Fabian
last_name: Grusdt
- first_name: Cécile
full_name: Repellin, Cécile
last_name: Repellin
- first_name: Nathan
full_name: Goldman, Nathan
last_name: Goldman
- first_name: Markus
full_name: Greiner, Markus
last_name: Greiner
citation:
ama: Leonard J, Kim S, Kwan J, et al. Realization of a fractional quantum Hall state
with ultracold atoms. Nature. 2023;619(7970):495-499. doi:10.1038/s41586-023-06122-4
apa: Leonard, J., Kim, S., Kwan, J., Segura, P., Grusdt, F., Repellin, C., … Greiner,
M. (2023). Realization of a fractional quantum Hall state with ultracold atoms.
Nature. Springer Nature. https://doi.org/10.1038/s41586-023-06122-4
chicago: Leonard, Julian, Sooshin Kim, Joyce Kwan, Perrin Segura, Fabian Grusdt,
Cécile Repellin, Nathan Goldman, and Markus Greiner. “Realization of a Fractional
Quantum Hall State with Ultracold Atoms.” Nature. Springer Nature, 2023.
https://doi.org/10.1038/s41586-023-06122-4.
ieee: J. Leonard et al., “Realization of a fractional quantum Hall state
with ultracold atoms,” Nature, vol. 619, no. 7970. Springer Nature, pp.
495–499, 2023.
ista: Leonard J, Kim S, Kwan J, Segura P, Grusdt F, Repellin C, Goldman N, Greiner
M. 2023. Realization of a fractional quantum Hall state with ultracold atoms.
Nature. 619(7970), 495–499.
mla: Leonard, Julian, et al. “Realization of a Fractional Quantum Hall State with
Ultracold Atoms.” Nature, vol. 619, no. 7970, Springer Nature, 2023, pp.
495–99, doi:10.1038/s41586-023-06122-4.
short: J. Leonard, S. Kim, J. Kwan, P. Segura, F. Grusdt, C. Repellin, N. Goldman,
M. Greiner, Nature 619 (2023) 495–499.
date_created: 2024-10-07T11:46:13Z
date_published: 2023-06-21T00:00:00Z
date_updated: 2024-10-08T11:09:24Z
day: '21'
doi: 10.1038/s41586-023-06122-4
extern: '1'
external_id:
arxiv:
- '2210.10919'
pmid:
- '37344594 '
fulldoi: https://doi.org/10.1038/s41586-023-06122-4
intvolume: ' 619'
issue: '7970'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2210.10919
month: '06'
oa: 1
oa_version: Preprint
page: 495-499
pmid: 1
publication: Nature
publication_identifier:
eissn:
- 1476-4687
issn:
- 0028-0836
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Realization of a fractional quantum Hall state with ultracold atoms
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 619
year: '2023'
...
---
_id: '18190'
abstract:
- lang: eng
text: Strongly correlated systems can exhibit unexpected phenomena when brought
in a state far from equilibrium. An example is many-body localization, which prevents
generic interacting systems from reaching thermal equilibrium even at long times1,2.
The stability of the many-body localized phase has been predicted to be hindered
by the presence of small thermal inclusions that act as a bath, leading to the
delocalization of the entire system through an avalanche propagation mechanism3,4,5,6,7,8.
Here we study the dynamics of a thermal inclusion of variable size when it is
coupled to a many-body localized system. We find evidence for accelerated transport
of thermal inclusion into the localized region. We monitor how the avalanche spreads
through the localized system and thermalizes it site by site by measuring the
site-resolved entropy over time. Furthermore, we isolate the strongly correlated
bath-induced dynamics with multipoint correlations between the bath and the system.
Our results have implications on the robustness of many-body localized systems
and their critical behaviour.
article_processing_charge: No
article_type: letter_note
arxiv: 1
author:
- first_name: Julian
full_name: Leonard, Julian
id: b75b3f45-7995-11ef-9bfd-9a9cd02c3577
last_name: Leonard
- first_name: Sooshin
full_name: Kim, Sooshin
last_name: Kim
- first_name: Matthew
full_name: Rispoli, Matthew
last_name: Rispoli
- first_name: Alexander
full_name: Lukin, Alexander
last_name: Lukin
- first_name: Robert
full_name: Schittko, Robert
last_name: Schittko
- first_name: Joyce
full_name: Kwan, Joyce
last_name: Kwan
- first_name: Eugene
full_name: Demler, Eugene
last_name: Demler
- first_name: Dries
full_name: Sels, Dries
last_name: Sels
- first_name: Markus
full_name: Greiner, Markus
last_name: Greiner
citation:
ama: Leonard J, Kim S, Rispoli M, et al. Probing the onset of quantum avalanches
in a many-body localized system. Nature Physics. 2023;19(4):481-485. doi:10.1038/s41567-022-01887-3
apa: Leonard, J., Kim, S., Rispoli, M., Lukin, A., Schittko, R., Kwan, J., … Greiner,
M. (2023). Probing the onset of quantum avalanches in a many-body localized system.
Nature Physics. Springer Nature. https://doi.org/10.1038/s41567-022-01887-3
chicago: Leonard, Julian, Sooshin Kim, Matthew Rispoli, Alexander Lukin, Robert
Schittko, Joyce Kwan, Eugene Demler, Dries Sels, and Markus Greiner. “Probing
the Onset of Quantum Avalanches in a Many-Body Localized System.” Nature Physics.
Springer Nature, 2023. https://doi.org/10.1038/s41567-022-01887-3.
ieee: J. Leonard et al., “Probing the onset of quantum avalanches in a many-body
localized system,” Nature Physics, vol. 19, no. 4. Springer Nature, pp.
481–485, 2023.
ista: Leonard J, Kim S, Rispoli M, Lukin A, Schittko R, Kwan J, Demler E, Sels D,
Greiner M. 2023. Probing the onset of quantum avalanches in a many-body localized
system. Nature Physics. 19(4), 481–485.
mla: Leonard, Julian, et al. “Probing the Onset of Quantum Avalanches in a Many-Body
Localized System.” Nature Physics, vol. 19, no. 4, Springer Nature, 2023,
pp. 481–85, doi:10.1038/s41567-022-01887-3.
short: J. Leonard, S. Kim, M. Rispoli, A. Lukin, R. Schittko, J. Kwan, E. Demler,
D. Sels, M. Greiner, Nature Physics 19 (2023) 481–485.
date_created: 2024-10-07T11:46:33Z
date_published: 2023-01-26T00:00:00Z
date_updated: 2024-10-08T10:52:08Z
day: '26'
doi: 10.1038/s41567-022-01887-3
extern: '1'
external_id:
arxiv:
- '2012.15270'
fulldoi: https://doi.org/10.1038/s41567-022-01887-3
intvolume: ' 19'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2012.15270
month: '01'
oa: 1
oa_version: Preprint
page: 481-485
publication: Nature Physics
publication_identifier:
eissn:
- 1745-2481
issn:
- 1745-2473
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Probing the onset of quantum avalanches in a many-body localized system
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 19
year: '2023'
...
---
_id: '18207'
abstract:
- lang: eng
text: Comparison of myoglobin structures reveals that protein isolated from horse
heart consistently adopts an alternate turn conformation in comparison to its
homologues. Analysis of hundreds of high-resolution structures discounts crystallization
conditions or the surrounding amino acid protein environment as explaining this
difference, that is also not captured by the AlphaFold prediction. Rather, a water
molecule is identified as stabilizing the conformation in the horse heart structure,
which immediately reverts to the whale conformation in molecular dynamics simulations
excluding that structural water.
article_number: '6094'
article_processing_charge: No
article_type: original
author:
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Ailie
full_name: Marx, Ailie
last_name: Marx
citation:
ama: Bronstein AM, Marx A. Water stabilizes an alternate turn conformation in horse
heart myoglobin. Scientific Reports. 2023;13. doi:10.1038/s41598-023-32821-z
apa: Bronstein, A. M., & Marx, A. (2023). Water stabilizes an alternate turn
conformation in horse heart myoglobin. Scientific Reports. Springer Nature.
https://doi.org/10.1038/s41598-023-32821-z
chicago: Bronstein, Alex M., and Ailie Marx. “Water Stabilizes an Alternate Turn
Conformation in Horse Heart Myoglobin.” Scientific Reports. Springer Nature,
2023. https://doi.org/10.1038/s41598-023-32821-z.
ieee: A. M. Bronstein and A. Marx, “Water stabilizes an alternate turn conformation
in horse heart myoglobin,” Scientific Reports, vol. 13. Springer Nature,
2023.
ista: Bronstein AM, Marx A. 2023. Water stabilizes an alternate turn conformation
in horse heart myoglobin. Scientific Reports. 13, 6094.
mla: Bronstein, Alex M., and Ailie Marx. “Water Stabilizes an Alternate Turn Conformation
in Horse Heart Myoglobin.” Scientific Reports, vol. 13, 6094, Springer
Nature, 2023, doi:10.1038/s41598-023-32821-z.
short: A.M. Bronstein, A. Marx, Scientific Reports 13 (2023).
date_created: 2024-10-08T12:46:41Z
date_published: 2023-04-13T00:00:00Z
date_updated: 2024-10-09T10:39:26Z
day: '13'
doi: 10.1038/s41598-023-32821-z
extern: '1'
external_id:
pmid:
- '37055458'
fulldoi: https://doi.org/10.1038/s41598-023-32821-z
has_accepted_license: '1'
intvolume: ' 13'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1038/s41598-023-32821-z
month: '04'
oa: 1
oa_version: Published Version
pmid: 1
publication: Scientific Reports
publication_identifier:
issn:
- 2045-2322
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Water stabilizes an alternate turn conformation in horse heart myoglobin
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: 13
year: '2023'
...
---
_id: '18208'
abstract:
- lang: eng
text: The holy grail of materials science is de novo molecular design, meaning engineering
molecules with desired characteristics. The introduction of generative deep learning
has greatly advanced efforts in this direction, yet molecular discovery remains
challenging and often inefficient. Herein we introduce GaUDI, a guided diffusion
model for inverse molecular design that combines an equivariant graph neural net
for property prediction and a generative diffusion model. We demonstrate GaUDI’s
effectiveness in designing molecules for organic electronic applications by using
single- and multiple-objective tasks applied to a generated dataset of 475,000
polycyclic aromatic systems. GaUDI shows improved conditional design, generating
molecules with optimal properties and even going beyond the original distribution
to suggest better molecules than those in the dataset. In addition to point-wise
targets, GaUDI can also be guided toward open-ended targets (for example, a minimum
or maximum) and in all cases achieves close to 100% validity of generated molecules.
article_processing_charge: No
article_type: original
author:
- first_name: Tomer
full_name: Weiss, Tomer
last_name: Weiss
- first_name: Eduardo
full_name: Mayo Yanes, Eduardo
last_name: Mayo Yanes
- first_name: Sabyasachi
full_name: Chakraborty, Sabyasachi
last_name: Chakraborty
- first_name: Luca
full_name: Cosmo, Luca
last_name: Cosmo
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Renana
full_name: Gershoni-Poranne, Renana
last_name: Gershoni-Poranne
citation:
ama: Weiss T, Mayo Yanes E, Chakraborty S, Cosmo L, Bronstein AM, Gershoni-Poranne
R. Guided diffusion for inverse molecular design. Nature Computational Science.
2023;3(10):873-882. doi:10.1038/s43588-023-00532-0
apa: Weiss, T., Mayo Yanes, E., Chakraborty, S., Cosmo, L., Bronstein, A. M., &
Gershoni-Poranne, R. (2023). Guided diffusion for inverse molecular design. Nature
Computational Science. Springer Nature. https://doi.org/10.1038/s43588-023-00532-0
chicago: Weiss, Tomer, Eduardo Mayo Yanes, Sabyasachi Chakraborty, Luca Cosmo, Alex
M. Bronstein, and Renana Gershoni-Poranne. “Guided Diffusion for Inverse Molecular
Design.” Nature Computational Science. Springer Nature, 2023. https://doi.org/10.1038/s43588-023-00532-0.
ieee: T. Weiss, E. Mayo Yanes, S. Chakraborty, L. Cosmo, A. M. Bronstein, and R.
Gershoni-Poranne, “Guided diffusion for inverse molecular design,” Nature Computational
Science, vol. 3, no. 10. Springer Nature, pp. 873–882, 2023.
ista: Weiss T, Mayo Yanes E, Chakraborty S, Cosmo L, Bronstein AM, Gershoni-Poranne
R. 2023. Guided diffusion for inverse molecular design. Nature Computational Science.
3(10), 873–882.
mla: Weiss, Tomer, et al. “Guided Diffusion for Inverse Molecular Design.” Nature
Computational Science, vol. 3, no. 10, Springer Nature, 2023, pp. 873–82,
doi:10.1038/s43588-023-00532-0.
short: T. Weiss, E. Mayo Yanes, S. Chakraborty, L. Cosmo, A.M. Bronstein, R. Gershoni-Poranne,
Nature Computational Science 3 (2023) 873–882.
date_created: 2024-10-08T12:46:58Z
date_published: 2023-10-05T00:00:00Z
date_updated: 2024-10-09T10:44:41Z
day: '05'
doi: 10.1038/s43588-023-00532-0
extern: '1'
external_id:
pmid:
- '38177755'
fulldoi: https://doi.org/10.1038/s43588-023-00532-0
intvolume: ' 3'
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.26434/chemrxiv-2023-z8ltp
month: '10'
oa: 1
oa_version: Preprint
page: 873-882
pmid: 1
publication: Nature Computational Science
publication_identifier:
issn:
- 2662-8457
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Guided diffusion for inverse molecular design
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 3
year: '2023'
...
---
_id: '18209'
abstract:
- lang: eng
text: In this work, interpretable deep learning was used to identify structure–property
relationships governing the HOMO–LUMO gap and the relative stability of polybenzenoid
hydrocarbons (PBHs) using a ring-based graph representation. This representation
was combined with a subunit-based perception of PBHs, allowing chemical insights
to be presented in terms of intuitive and simple structural motifs. The resulting
insights agree with conventional organic chemistry knowledge and electronic structure-based
analyses and also reveal new behaviors and identify influential structural motifs.
In particular, we evaluated and compared the effects of linear, angular, and branching
motifs on these two molecular properties and explored the role of dispersion in
mitigating the torsional strain inherent in nonplanar PBHs. Hence, the observed
regularities and the proposed analysis contribute to a deeper understanding of
the behavior of PBHs and form the foundation for design strategies for new functional
PBHs.
article_processing_charge: No
article_type: original
author:
- first_name: Tomer
full_name: Weiss, Tomer
last_name: Weiss
- first_name: Alexandra
full_name: Wahab, Alexandra
last_name: Wahab
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Renana
full_name: Gershoni-Poranne, Renana
last_name: Gershoni-Poranne
citation:
ama: Weiss T, Wahab A, Bronstein AM, Gershoni-Poranne R. Interpretable deep-learning
unveils structure–property relationships in polybenzenoid hydrocarbons. The
Journal of Organic Chemistry. 2023;88(14):9645-9656. doi:10.1021/acs.joc.2c02381
apa: Weiss, T., Wahab, A., Bronstein, A. M., & Gershoni-Poranne, R. (2023).
Interpretable deep-learning unveils structure–property relationships in polybenzenoid
hydrocarbons. The Journal of Organic Chemistry. American Chemical Society.
https://doi.org/10.1021/acs.joc.2c02381
chicago: Weiss, Tomer, Alexandra Wahab, Alex M. Bronstein, and Renana Gershoni-Poranne.
“Interpretable Deep-Learning Unveils Structure–Property Relationships in Polybenzenoid
Hydrocarbons.” The Journal of Organic Chemistry. American Chemical Society,
2023. https://doi.org/10.1021/acs.joc.2c02381.
ieee: T. Weiss, A. Wahab, A. M. Bronstein, and R. Gershoni-Poranne, “Interpretable
deep-learning unveils structure–property relationships in polybenzenoid hydrocarbons,”
The Journal of Organic Chemistry, vol. 88, no. 14. American Chemical Society,
pp. 9645–9656, 2023.
ista: Weiss T, Wahab A, Bronstein AM, Gershoni-Poranne R. 2023. Interpretable deep-learning
unveils structure–property relationships in polybenzenoid hydrocarbons. The Journal
of Organic Chemistry. 88(14), 9645–9656.
mla: Weiss, Tomer, et al. “Interpretable Deep-Learning Unveils Structure–Property
Relationships in Polybenzenoid Hydrocarbons.” The Journal of Organic Chemistry,
vol. 88, no. 14, American Chemical Society, 2023, pp. 9645–56, doi:10.1021/acs.joc.2c02381.
short: T. Weiss, A. Wahab, A.M. Bronstein, R. Gershoni-Poranne, The Journal of Organic
Chemistry 88 (2023) 9645–9656.
date_created: 2024-10-08T12:47:17Z
date_published: 2023-01-25T00:00:00Z
date_updated: 2024-10-09T10:49:42Z
day: '25'
doi: 10.1021/acs.joc.2c02381
extern: '1'
external_id:
pmid:
- '36696660'
fulldoi: https://doi.org/10.1021/acs.joc.2c02381
intvolume: ' 88'
issue: '14'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: 10.26434/chemrxiv-2022-krng1
month: '01'
oa: 1
oa_version: Preprint
page: 9645-9656
pmid: 1
publication: The Journal of Organic Chemistry
publication_identifier:
eissn:
- 1520-6904
issn:
- 0022-3263
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Interpretable deep-learning unveils structure–property relationships in polybenzenoid
hydrocarbons
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 88
year: '2023'
...
---
_id: '18212'
abstract:
- lang: eng
text: The high memory bandwidth demand of sparse embedding layers continues to be
a critical challenge in scaling the performance of recommendation models. While
prior works have exploited heterogeneous memory system designs and partial embedding
sum memoization techniques, they offer limited benefits. This is because prior
designs either target a very small subset of embeddings to simplify their analysis
or incur a high processing cost to account for all embeddings, which does not
scale with the large sizes of modern embedding tables. This paper proposes GRACE-a
lightweight and scalable graph-based algorithm-system co-design framework to significantly
improve the embedding layer performance of recommendation models. GRACE proposes
a novel Item Co-occurrence Graph (ICG) that scalably records item co-occurrences.
GRACE then presents a new system-aware ICG clustering algorithm to find frequently
accessed item combinations of arbitrary lengths to compute and memoize their partial
sums. High-frequency partial sums are stored in a software-managed cache space
to reduce memory traffic and improve the throughput of computing sparse features.
We further present a cache data layout and low-cost address computation logic
to efficiently lookup item embeddings and their partial sums. Our evaluation shows
that GRACE significantly outperforms the state-of-the-art techniques SPACE and
MERCI by 1.5x and 1.4x, respectively.
article_processing_charge: No
author:
- first_name: Haojie
full_name: Ye, Haojie
last_name: Ye
- first_name: Sanketh
full_name: Vedula, Sanketh
last_name: Vedula
- first_name: Yuhan
full_name: Chen, Yuhan
last_name: Chen
- first_name: Yichen
full_name: Yang, Yichen
last_name: Yang
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Ronald
full_name: Dreslinski, Ronald
last_name: Dreslinski
- first_name: Trevor
full_name: Mudge, Trevor
last_name: Mudge
- first_name: Nishil
full_name: Talati, Nishil
last_name: Talati
citation:
ama: 'Ye H, Vedula S, Chen Y, et al. GRACE: A scalable graph-based approach to accelerating
recommendation model inference. In: Proceedings of the 28th ACM International
Conference on Architectural Support for Programming Languages and Operating Systems.
Vol 11. Association for Computing Machinery; 2023:282-301. doi:10.1145/3582016.3582029'
apa: 'Ye, H., Vedula, S., Chen, Y., Yang, Y., Bronstein, A. M., Dreslinski, R.,
… Talati, N. (2023). GRACE: A scalable graph-based approach to accelerating recommendation
model inference. In Proceedings of the 28th ACM International Conference on
Architectural Support for Programming Languages and Operating Systems (Vol.
11, pp. 282–301). Association for Computing Machinery. https://doi.org/10.1145/3582016.3582029'
chicago: 'Ye, Haojie, Sanketh Vedula, Yuhan Chen, Yichen Yang, Alex M. Bronstein,
Ronald Dreslinski, Trevor Mudge, and Nishil Talati. “GRACE: A Scalable Graph-Based
Approach to Accelerating Recommendation Model Inference.” In Proceedings of
the 28th ACM International Conference on Architectural Support for Programming
Languages and Operating Systems, 11:282–301. Association for Computing Machinery,
2023. https://doi.org/10.1145/3582016.3582029.'
ieee: 'H. Ye et al., “GRACE: A scalable graph-based approach to accelerating
recommendation model inference,” in Proceedings of the 28th ACM International
Conference on Architectural Support for Programming Languages and Operating Systems,
2023, vol. 11, no. 3, pp. 282–301.'
ista: 'Ye H, Vedula S, Chen Y, Yang Y, Bronstein AM, Dreslinski R, Mudge T, Talati
N. 2023. GRACE: A scalable graph-based approach to accelerating recommendation
model inference. Proceedings of the 28th ACM International Conference on Architectural
Support for Programming Languages and Operating Systems. vol. 11, 282–301.'
mla: 'Ye, Haojie, et al. “GRACE: A Scalable Graph-Based Approach to Accelerating
Recommendation Model Inference.” Proceedings of the 28th ACM International
Conference on Architectural Support for Programming Languages and Operating Systems,
vol. 11, no. 3, Association for Computing Machinery, 2023, pp. 282–301, doi:10.1145/3582016.3582029.'
short: H. Ye, S. Vedula, Y. Chen, Y. Yang, A.M. Bronstein, R. Dreslinski, T. Mudge,
N. Talati, in:, Proceedings of the 28th ACM International Conference on Architectural
Support for Programming Languages and Operating Systems, Association for Computing
Machinery, 2023, pp. 282–301.
date_created: 2024-10-08T12:48:11Z
date_published: 2023-03-01T00:00:00Z
date_updated: 2024-10-09T11:21:19Z
day: '01'
doi: 10.1145/3582016.3582029
extern: '1'
fulldoi: https://doi.org/10.1145/3582016.3582029
intvolume: ' 11'
issue: '3'
language:
- iso: eng
month: '03'
oa_version: None
page: 282-301
publication: Proceedings of the 28th ACM International Conference on Architectural
Support for Programming Languages and Operating Systems
publication_identifier:
isbn:
- '9781450399180'
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
related_material:
link:
- relation: software
url: https://doi.org/10.5281/zenodo.7699872
scopus_import: '1'
status: public
title: 'GRACE: A scalable graph-based approach to accelerating recommendation model
inference'
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 11
year: '2023'
...
---
_id: '18213'
abstract:
- lang: eng
text: "What is the best way to match the nodes of two graphs? This graph alignment
problem generalizes graph isomorphism and arises in applications from social network
analysis to bioinformatics. Some solutions assume that auxiliary information on
known matches or node or edge attributes is available, or utilize arbitrary graph
features. Such methods fare poorly in the pure form of the problem, in which only
graph structures are given. Other proposals translate the problem to one of aligning
node embeddings, yet, by doing so, provide only a single-scale view of the graph.\r\nIn
this article, we transfer the shape-analysis concept of functional maps from the
continuous to the discrete case, and treat the graph alignment problem as a special
case of the problem of finding a mapping between functions on graphs. We present
GRASP, a method that first establishes a correspondence between functions derived
from Laplacian matrix eigenvectors, which capture multiscale structural characteristics,
and then exploits this correspondence to align nodes. We enhance the basic form
of GRASP by altering two of its components, namely the embedding method and the
assignment procedure it employs, leveraging its modular, hence adaptable design.
Our experimental study, featuring noise levels higher than anything used in previous
studies, shows that the enhanced form of GRASP outperforms scalable state-of-the-art
methods for graph alignment across noise levels and graph types, and performs
competitively with respect to the best non-scalable ones. We include in our study
another modular graph alignment algorithm, CONE, which is also adaptable thanks
to its modular nature, and show it can manage graphs with skewed power-law degree
distributions."
article_number: '50'
article_processing_charge: No
article_type: original
author:
- first_name: Judith
full_name: Hermanns, Judith
last_name: Hermanns
- first_name: Konstantinos
full_name: Skitsas, Konstantinos
last_name: Skitsas
- first_name: Anton
full_name: Tsitsulin, Anton
last_name: Tsitsulin
- first_name: Marina
full_name: Munkhoeva, Marina
last_name: Munkhoeva
- first_name: Alexander
full_name: Kyster, Alexander
last_name: Kyster
- first_name: Simon
full_name: Nielsen, Simon
last_name: Nielsen
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Davide
full_name: Mottin, Davide
last_name: Mottin
- first_name: Panagiotis
full_name: Karras, Panagiotis
last_name: Karras
citation:
ama: 'Hermanns J, Skitsas K, Tsitsulin A, et al. GRASP: Scalable graph alignment
by spectral corresponding functions. ACM Transactions on Knowledge Discovery
from Data. 2023;17(4). doi:10.1145/3561058'
apa: 'Hermanns, J., Skitsas, K., Tsitsulin, A., Munkhoeva, M., Kyster, A., Nielsen,
S., … Karras, P. (2023). GRASP: Scalable graph alignment by spectral corresponding
functions. ACM Transactions on Knowledge Discovery from Data. Association
for Computing Machinery. https://doi.org/10.1145/3561058'
chicago: 'Hermanns, Judith, Konstantinos Skitsas, Anton Tsitsulin, Marina Munkhoeva,
Alexander Kyster, Simon Nielsen, Alex M. Bronstein, Davide Mottin, and Panagiotis
Karras. “GRASP: Scalable Graph Alignment by Spectral Corresponding Functions.”
ACM Transactions on Knowledge Discovery from Data. Association for Computing
Machinery, 2023. https://doi.org/10.1145/3561058.'
ieee: 'J. Hermanns et al., “GRASP: Scalable graph alignment by spectral corresponding
functions,” ACM Transactions on Knowledge Discovery from Data, vol. 17,
no. 4. Association for Computing Machinery, 2023.'
ista: 'Hermanns J, Skitsas K, Tsitsulin A, Munkhoeva M, Kyster A, Nielsen S, Bronstein
AM, Mottin D, Karras P. 2023. GRASP: Scalable graph alignment by spectral corresponding
functions. ACM Transactions on Knowledge Discovery from Data. 17(4), 50.'
mla: 'Hermanns, Judith, et al. “GRASP: Scalable Graph Alignment by Spectral Corresponding
Functions.” ACM Transactions on Knowledge Discovery from Data, vol. 17,
no. 4, 50, Association for Computing Machinery, 2023, doi:10.1145/3561058.'
short: J. Hermanns, K. Skitsas, A. Tsitsulin, M. Munkhoeva, A. Kyster, S. Nielsen,
A.M. Bronstein, D. Mottin, P. Karras, ACM Transactions on Knowledge Discovery
from Data 17 (2023).
date_created: 2024-10-08T12:48:38Z
date_published: 2023-02-24T00:00:00Z
date_updated: 2024-10-09T11:24:50Z
day: '24'
doi: 10.1145/3561058
extern: '1'
fulldoi: https://doi.org/10.1145/3561058
intvolume: ' 17'
issue: '4'
language:
- iso: eng
month: '02'
oa_version: None
publication: ACM Transactions on Knowledge Discovery from Data
publication_identifier:
eissn:
- 1556-472X
issn:
- 1556-4681
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'GRASP: Scalable graph alignment by spectral corresponding functions'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 17
year: '2023'
...
---
_id: '18214'
abstract:
- lang: eng
text: "Graph sparsification is a technique that approximates a given graph by a
sparse graph with a subset of vertices and/or edges. The goal of an effective
sparsification algorithm is to maintain specific graph properties relevant to
the downstream task while minimizing the graph's size. Graph algorithms often
suffer from long execution time due to the irregularity and the large real-world
graph size. Graph sparsification can be applied to greatly reduce the run time
of graph algorithms by substituting the full graph with a much smaller sparsified
graph, without significantly degrading the output quality. However, the interaction
between numerous sparsifiers and graph properties is not widely explored, and
the potential of graph sparsification is not fully understood.\r\n In
this work, we cover 16 widely-used graph metrics, 12 representative graph sparsification
algorithms, and 14 real-world input graphs spanning various categories, exhibiting
diverse characteristics, sizes, and densities. We developed a framework to extensively
assess the performance of these sparsification algorithms against graph metrics,
and provide insights to the results. Our study shows that there is no one sparsifier
that performs the best in preserving all graph properties, e.g. sparsifiers that
preserve distance-related graph properties (eccentricity) struggle to perform
well on Graph Neural Networks (GNN). This paper presents a comprehensive experimental
study evaluating the performance of sparsification algorithms in preserving essential
graph metrics. The insights inform future research in incorporating matching graph
sparsification to graph algorithms to maximize benefits while minimizing quality
degradation. Furthermore, we provide a framework to facilitate the future evaluation
of evolving sparsification algorithms, graph metrics, and ever-growing graph data."
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Yuhan
full_name: Chen, Yuhan
last_name: Chen
- first_name: Haojie
full_name: Ye, Haojie
last_name: Ye
- first_name: Sanketh
full_name: Vedula, Sanketh
last_name: Vedula
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Ronald
full_name: Dreslinski, Ronald
last_name: Dreslinski
- first_name: Trevor
full_name: Mudge, Trevor
last_name: Mudge
- first_name: Nishil
full_name: Talati, Nishil
last_name: Talati
citation:
ama: Chen Y, Ye H, Vedula S, et al. Demystifying graph sparsification algorithms
in graph properties preservation. Proceedings of the VLDB Endowment. 2023;17(3):427-440.
doi:10.14778/3632093.3632106
apa: Chen, Y., Ye, H., Vedula, S., Bronstein, A. M., Dreslinski, R., Mudge, T.,
& Talati, N. (2023). Demystifying graph sparsification algorithms in graph
properties preservation. Proceedings of the VLDB Endowment. Association
for Computing Machinery. https://doi.org/10.14778/3632093.3632106
chicago: Chen, Yuhan, Haojie Ye, Sanketh Vedula, Alex M. Bronstein, Ronald Dreslinski,
Trevor Mudge, and Nishil Talati. “Demystifying Graph Sparsification Algorithms
in Graph Properties Preservation.” Proceedings of the VLDB Endowment. Association
for Computing Machinery, 2023. https://doi.org/10.14778/3632093.3632106.
ieee: Y. Chen et al., “Demystifying graph sparsification algorithms in graph
properties preservation,” Proceedings of the VLDB Endowment, vol. 17, no.
3. Association for Computing Machinery, pp. 427–440, 2023.
ista: Chen Y, Ye H, Vedula S, Bronstein AM, Dreslinski R, Mudge T, Talati N. 2023.
Demystifying graph sparsification algorithms in graph properties preservation.
Proceedings of the VLDB Endowment. 17(3), 427–440.
mla: Chen, Yuhan, et al. “Demystifying Graph Sparsification Algorithms in Graph
Properties Preservation.” Proceedings of the VLDB Endowment, vol. 17, no.
3, Association for Computing Machinery, 2023, pp. 427–40, doi:10.14778/3632093.3632106.
short: Y. Chen, H. Ye, S. Vedula, A.M. Bronstein, R. Dreslinski, T. Mudge, N. Talati,
Proceedings of the VLDB Endowment 17 (2023) 427–440.
date_created: 2024-10-08T12:48:57Z
date_published: 2023-11-01T00:00:00Z
date_updated: 2024-10-09T11:28:33Z
day: '01'
doi: 10.14778/3632093.3632106
extern: '1'
external_id:
arxiv:
- '2311.12314'
fulldoi: https://doi.org/10.14778/3632093.3632106
intvolume: ' 17'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2311.12314
month: '11'
oa: 1
oa_version: Preprint
page: 427-440
publication: Proceedings of the VLDB Endowment
publication_identifier:
issn:
- 2150-8097
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
scopus_import: '1'
status: public
title: Demystifying graph sparsification algorithms in graph properties preservation
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 17
year: '2023'
...
---
_id: '18215'
abstract:
- lang: eng
text: 'We study the problem of real-time scheduling in a multi-hop millimeter-wave
(mmWave) mesh. We develop a model-free deep reinforcement learning algorithm called
Adaptive Activator RL (AARL), which determines the subset of mmWave links that
should be activated during each time slot and the power level for each link. The
most important property of AARL is its ability to make scheduling decisions within
the strict time frame constraints of typical 5G mmWave networks. AARL can handle
a variety of network topologies, network loads, and interference models, it can
also adapt to different workloads. We demonstrate the operation of AARL on several
topologies: a small topology with 10 links, a moderately-sized mesh with 48 links,
and a large topology with 96 links. We show that for each topology, we compare
the throughput obtained by AARL to that of a benchmark algorithm called RPMA (Residual
Profit Maximizer Algorithm). The most important advantage of AARL compared to
RPMA is that it is much faster and can make the necessary scheduling decisions
very rapidly during every time slot, while RPMA cannot. In addition, the quality
of the scheduling decisions made by AARL outperforms those made by RPMA.'
article_processing_charge: No
arxiv: 1
author:
- first_name: Barak
full_name: Gahtan, Barak
last_name: Gahtan
- first_name: Reuven
full_name: Cohen, Reuven
last_name: Cohen
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Gil
full_name: Kedar, Gil
last_name: Kedar
citation:
ama: 'Gahtan B, Cohen R, Bronstein AM, Kedar G. Using deep reinforcement learning
for mmWave real-time scheduling. In: 14th International Conference on Network
of the Future. IEEE; 2023:71-79. doi:10.1109/nof58724.2023.10302794'
apa: 'Gahtan, B., Cohen, R., Bronstein, A. M., & Kedar, G. (2023). Using deep
reinforcement learning for mmWave real-time scheduling. In 14th International
Conference on Network of the Future (pp. 71–79). Izmir, Turkiye: IEEE. https://doi.org/10.1109/nof58724.2023.10302794'
chicago: Gahtan, Barak, Reuven Cohen, Alex M. Bronstein, and Gil Kedar. “Using Deep
Reinforcement Learning for MmWave Real-Time Scheduling.” In 14th International
Conference on Network of the Future, 71–79. IEEE, 2023. https://doi.org/10.1109/nof58724.2023.10302794.
ieee: B. Gahtan, R. Cohen, A. M. Bronstein, and G. Kedar, “Using deep reinforcement
learning for mmWave real-time scheduling,” in 14th International Conference
on Network of the Future, Izmir, Turkiye, 2023, pp. 71–79.
ista: 'Gahtan B, Cohen R, Bronstein AM, Kedar G. 2023. Using deep reinforcement
learning for mmWave real-time scheduling. 14th International Conference on Network
of the Future. NoF: Conference on Network of the Future, 71–79.'
mla: Gahtan, Barak, et al. “Using Deep Reinforcement Learning for MmWave Real-Time
Scheduling.” 14th International Conference on Network of the Future, IEEE,
2023, pp. 71–79, doi:10.1109/nof58724.2023.10302794.
short: B. Gahtan, R. Cohen, A.M. Bronstein, G. Kedar, in:, 14th International Conference
on Network of the Future, IEEE, 2023, pp. 71–79.
conference:
end_date: 2023-10-06
location: Izmir, Turkiye
name: 'NoF: Conference on Network of the Future'
start_date: 2023-10-04
date_created: 2024-10-08T12:50:18Z
date_published: 2023-11-01T00:00:00Z
date_updated: 2024-10-09T11:40:45Z
day: '01'
doi: 10.1109/nof58724.2023.10302794
extern: '1'
external_id:
arxiv:
- '2210.01423'
fulldoi: https://doi.org/10.1109/nof58724.2023.10302794
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.2210.01423'
month: '11'
oa: 1
oa_version: Preprint
page: 71-79
publication: 14th International Conference on Network of the Future
publication_identifier:
eissn:
- 2833-0072
isbn:
- '9798350338089'
publication_status: published
publisher: IEEE
quality_controlled: '1'
scopus_import: '1'
status: public
title: Using deep reinforcement learning for mmWave real-time scheduling
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...