A comparison of spectral reconstruction methods applied to non-zero temperature NRQCD meson correlation functions

Thomas Spriggs; Gert Aarts; Chris Allton; Timothy Burns; Rachel Horohan D’Arcy; Benjamin Jäger; Seyong Kim; Maria-Paola Lombardo; Sam Offler; Ben Page; Sinead M. Ryan; Jon-Ivar Skullerud

doi:10.1051/epjconf/202225805011

A comparison of spectral reconstruction methods applied to non-zero temperature NRQCD meson correlation functions

Thomas Spriggs^*
, Gert Aarts
, Chris Allton
, Timothy Burns
, Rachel Horohan D’Arcy
, Benjamin Jäger
, Seyong Kim
, Maria-Paola Lombardo
, Sam Offler
, Ben Page
, Sinead M. Ryan
, Jon-Ivar Skullerud

^*Kontaktforfatter

Institut for Matematik og Datalogi

European Centre for Theoretical Studies in Nuclear Physics and Related Areas
Maynooth University
Sejong University
INFN Sezione di Firenze
Swansea University
Trinity College Dublin

Publikation: Bidrag til tidsskrift › Konferenceartikel › Forskning › peer review

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Abstract

We present results from the fastsum collaboration’s programme to determine the spectrum of the bottomonium system as a function of temperature. Three different methods of extracting spectral information are discussed: a Maximum Likelihood approach using a Gaussian spectral function for the ground state, the Backus Gilbert method, and the Kernel Ridge Regression machine learning procedure. We employ the fastsum anisotropic lattices with 2+1 dynamical quark flavours, with temperatures ranging from 47 to 375 MeV.

Originalsprog	Engelsk
Artikelnummer	05011
Tidsskrift	EPJ Web of Conferences
Vol/bind	258
Antal sider	8
ISSN	2100-014X
DOI	https://doi.org/10.1051/epjconf/202225805011
Status	Udgivet - jan. 2022
Begivenhed	A Virtual Tribute to Quark Confinement and the Hadron Spectrum 2021 - Varighed: 2. aug. 2021 → 6. aug. 2021 https://www.ux.uis.no/vconf21/

Konference

Konference	A Virtual Tribute to Quark Confinement and the Hadron Spectrum 2021
Periode	02/08/2021 → 06/08/2021
Internetadresse	https://www.ux.uis.no/vconf21/

Dokumenter og links

10.1051/epjconf/202225805011Licens: CC BY

Open Access VersionForlagets udgivne version, 436 KBLicens: CC BY

SDU link

Tjek adgangen til materialet i Syddansk Universitetsbiblioteks søgemaskine

Citationsformater

@inproceedings{8e969cd08102421bbe72805706ff4ae2,

title = "A comparison of spectral reconstruction methods applied to non-zero temperature NRQCD meson correlation functions",

abstract = "We present results from the fastsum collaboration{\textquoteright}s programme to determine the spectrum of the bottomonium system as a function of temperature. Three different methods of extracting spectral information are discussed: a Maximum Likelihood approach using a Gaussian spectral function for the ground state, the Backus Gilbert method, and the Kernel Ridge Regression machine learning procedure. We employ the fastsum anisotropic lattices with 2+1 dynamical quark flavours, with temperatures ranging from 47 to 375 MeV.",

author = "Thomas Spriggs and Gert Aarts and Chris Allton and Timothy Burns and D{\textquoteright}Arcy, \{Rachel Horohan\} and Benjamin J{\"a}ger and Seyong Kim and Maria-Paola Lombardo and Sam Offler and Ben Page and Ryan, \{Sinead M.\} and Jon-Ivar Skullerud",

year = "2022",

month = jan,

doi = "10.1051/epjconf/202225805011",

language = "English",

volume = "258",

journal = "EPJ Web of Conferences",

issn = "2100-014X",

publisher = "EDP Sciences",

note = "A Virtual Tribute to Quark Confinement and the Hadron Spectrum 2021 ; Conference date: 02-08-2021 Through 06-08-2021",

url = "https://www.ux.uis.no/vconf21/",

}

TY - GEN

T1 - A comparison of spectral reconstruction methods applied to non-zero temperature NRQCD meson correlation functions

AU - Spriggs, Thomas

AU - Aarts, Gert

AU - Allton, Chris

AU - Burns, Timothy

AU - D’Arcy, Rachel Horohan

AU - Jäger, Benjamin

AU - Kim, Seyong

AU - Lombardo, Maria-Paola

AU - Offler, Sam

AU - Page, Ben

AU - Ryan, Sinead M.

AU - Skullerud, Jon-Ivar

PY - 2022/1

Y1 - 2022/1

N2 - We present results from the fastsum collaboration’s programme to determine the spectrum of the bottomonium system as a function of temperature. Three different methods of extracting spectral information are discussed: a Maximum Likelihood approach using a Gaussian spectral function for the ground state, the Backus Gilbert method, and the Kernel Ridge Regression machine learning procedure. We employ the fastsum anisotropic lattices with 2+1 dynamical quark flavours, with temperatures ranging from 47 to 375 MeV.

AB - We present results from the fastsum collaboration’s programme to determine the spectrum of the bottomonium system as a function of temperature. Three different methods of extracting spectral information are discussed: a Maximum Likelihood approach using a Gaussian spectral function for the ground state, the Backus Gilbert method, and the Kernel Ridge Regression machine learning procedure. We employ the fastsum anisotropic lattices with 2+1 dynamical quark flavours, with temperatures ranging from 47 to 375 MeV.

U2 - 10.1051/epjconf/202225805011

DO - 10.1051/epjconf/202225805011

M3 - Conference article

SN - 2100-014X

VL - 258

JO - EPJ Web of Conferences

JF - EPJ Web of Conferences

M1 - 05011

T2 - A Virtual Tribute to Quark Confinement and the Hadron Spectrum 2021

Y2 - 2 August 2021 through 6 August 2021

ER -

A comparison of spectral reconstruction methods applied to non-zero temperature NRQCD meson correlation functions

Abstract

Konference

Dokumenter og links

SDU link

Fingeraftryk

Citationsformater