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Spectral Reconstruction in NRQCD via the Backus-Gilbert Method

BENJAMIN PAGE, Gert Aarts Orcid Logo, Chris Allton Orcid Logo, Benjamin Jaeger, Seyong Kim, Maria Paola Lombardo, Sam Offler, Sinead Ryan, Jon-Ivar Skullerud, Thomas Spriggs

Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021), Volume: 396, Start page: 134

Swansea University Authors: BENJAMIN PAGE, Gert Aarts Orcid Logo, Chris Allton Orcid Logo, Sam Offler

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DOI (Published version): 10.22323/1.396.0134

Abstract

We present progress results from the FASTSUM collaboration’s programme to determine the spectrum of the bottomonium system as a function of temperature using a variety of approaches. In thiscontribution, the Backus-Gilbert method is used to reconstruct spectral functions from NRQCDmeson correlator d...

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Published in: Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021)
ISSN: 1824-8039
Published: Trieste, Italy Sissa Medialab 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa69022
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spelling 2025-04-23T15:53:22.8996098 v2 69022 2025-03-04 Spectral Reconstruction in NRQCD via the Backus-Gilbert Method ec189be39b9a516df3229a4a19243b2d BENJAMIN PAGE BENJAMIN PAGE true false 1ba0dad382dfe18348ec32fc65f3f3de 0000-0002-6038-3782 Gert Aarts Gert Aarts true false de706a260fa1e1e47430693e135f41c7 0000-0003-0795-124X Chris Allton Chris Allton true false d05d1e268521f7cd301d47852e36e734 Sam Offler Sam Offler true false 2025-03-04 We present progress results from the FASTSUM collaboration’s programme to determine the spectrum of the bottomonium system as a function of temperature using a variety of approaches. In thiscontribution, the Backus-Gilbert method is used to reconstruct spectral functions from NRQCDmeson correlator data from FASTSUM’s anisotropic ensembles at nonzero temperature. We focus inparticular on the resolving power of the method, providing a demonstration of how the underlyingresolution functions can be probed by exploiting the Laplacian nature of the NRQCD kernel. Weconclude with estimates of the bottomonium ground state mass and widths at nonzero temperature. Conference Paper/Proceeding/Abstract Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021) 396 134 Sissa Medialab Trieste, Italy 1824-8039 8 7 2022 2022-07-08 10.22323/1.396.0134 COLLEGE NANME COLLEGE CODE Swansea University This work is supported by STFC grant ST/T000813/1. SK is supported by the National Research Foundation of Korea under grant NRF-2021R1A2C1092701 funded by the Korean government (MEST).BPhasbeensupportedbyaSwanseaUniversityResearchExcellenceScholarship (SURES). This work used the DiRAC Extreme Scaling service at the University of Edinburgh, operated by the Edinburgh Parallel Computing Centre on behalf of the STFC DiRAC HPC Facility (www.dirac.ac.uk). This equipment was funded by BEIS capital funding via STFC capital grant ST/R00238X/1 and STFC DiRAC Operations grant ST/R001006/1. DiRAC is part of the National e-Infrastructure. This work was performed using PRACE resources at Cineca via grants 2015133079 and 2018194714. We acknowledge the support of the Supercomputing Wales project, which is part-funded by the European Regional Development Fund (ERDF) via WelshGovernment, and the University of Southern Denmark for use of computing facilities. 2025-04-23T15:53:22.8996098 2025-03-04T11:47:27.5911555 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics BENJAMIN PAGE 1 Gert Aarts 0000-0002-6038-3782 2 Chris Allton 0000-0003-0795-124X 3 Benjamin Jaeger 4 Seyong Kim 5 Maria Paola Lombardo 6 Sam Offler 7 Sinead Ryan 8 Jon-Ivar Skullerud 9 Thomas Spriggs 10 69022__34070__3c577923744943ac98639a25b7b33def.pdf 69022.VoR.pdf 2025-04-23T15:51:20.6031301 Output 616465 application/pdf Version of Record true ©Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0). true eng https://creativecommons.org/licenses/by-nc-nd/4.0/deed.en
title Spectral Reconstruction in NRQCD via the Backus-Gilbert Method
spellingShingle Spectral Reconstruction in NRQCD via the Backus-Gilbert Method
BENJAMIN PAGE
Gert Aarts
Chris Allton
Sam Offler
title_short Spectral Reconstruction in NRQCD via the Backus-Gilbert Method
title_full Spectral Reconstruction in NRQCD via the Backus-Gilbert Method
title_fullStr Spectral Reconstruction in NRQCD via the Backus-Gilbert Method
title_full_unstemmed Spectral Reconstruction in NRQCD via the Backus-Gilbert Method
title_sort Spectral Reconstruction in NRQCD via the Backus-Gilbert Method
author_id_str_mv ec189be39b9a516df3229a4a19243b2d
1ba0dad382dfe18348ec32fc65f3f3de
de706a260fa1e1e47430693e135f41c7
d05d1e268521f7cd301d47852e36e734
author_id_fullname_str_mv ec189be39b9a516df3229a4a19243b2d_***_BENJAMIN PAGE
1ba0dad382dfe18348ec32fc65f3f3de_***_Gert Aarts
de706a260fa1e1e47430693e135f41c7_***_Chris Allton
d05d1e268521f7cd301d47852e36e734_***_Sam Offler
author BENJAMIN PAGE
Gert Aarts
Chris Allton
Sam Offler
author2 BENJAMIN PAGE
Gert Aarts
Chris Allton
Benjamin Jaeger
Seyong Kim
Maria Paola Lombardo
Sam Offler
Sinead Ryan
Jon-Ivar Skullerud
Thomas Spriggs
format Conference Paper/Proceeding/Abstract
container_title Proceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021)
container_volume 396
container_start_page 134
publishDate 2022
institution Swansea University
issn 1824-8039
doi_str_mv 10.22323/1.396.0134
publisher Sissa Medialab
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 1
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description We present progress results from the FASTSUM collaboration’s programme to determine the spectrum of the bottomonium system as a function of temperature using a variety of approaches. In thiscontribution, the Backus-Gilbert method is used to reconstruct spectral functions from NRQCDmeson correlator data from FASTSUM’s anisotropic ensembles at nonzero temperature. We focus inparticular on the resolving power of the method, providing a demonstration of how the underlyingresolution functions can be probed by exploiting the Laplacian nature of the NRQCD kernel. Weconclude with estimates of the bottomonium ground state mass and widths at nonzero temperature.
published_date 2022-07-08T05:46:12Z
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score 11.065032

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