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Spectral functions, maximum entropy method and unconventional methods in lattice field theory

Danielle Blythe, Jonathan Clowser, Chris Allton Orcid Logo

Nuclear Physics B - Proceedings Supplements, Volume: 109, Issue: 1, Pages: 192 - 196

Swansea University Author: Chris Allton Orcid Logo

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DOI (Published version): 10.1016/S0920-5632(02)01414-7

Abstract

We present two unconventional methods of extracting information from hadronic 2-point functions produced by Monte Carlo simulations. The first is an extension of earlier work by Leinweber which combines a QCD Sum Rule approach with lattice data. The second uses the Maximum Entropy Method to invert t...

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Published in: Nuclear Physics B - Proceedings Supplements
ISSN: 09205632
Published: 2002
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URI: https://cronfa.swan.ac.uk/Record/cronfa28436
first_indexed 2016-06-02T18:23:31Z
last_indexed 2018-02-09T05:12:32Z
id cronfa28436
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spelling 2016-08-08T12:32:45.4550402 v2 28436 2016-06-02 Spectral functions, maximum entropy method and unconventional methods in lattice field theory de706a260fa1e1e47430693e135f41c7 0000-0003-0795-124X Chris Allton Chris Allton true false 2016-06-02 BGPS We present two unconventional methods of extracting information from hadronic 2-point functions produced by Monte Carlo simulations. The first is an extension of earlier work by Leinweber which combines a QCD Sum Rule approach with lattice data. The second uses the Maximum Entropy Method to invert the 2-point data to obtain estimates of the spectral function. The first approach is applied to QCD data, and the second method is applied to the Nambu--Jona-Lasinio model in (2+1)D. Both methods promise to augment the current approach where physical quantities are extracted by fitting to pure exponentials. Journal Article Nuclear Physics B - Proceedings Supplements 109 1 192 196 09205632 31 12 2002 2002-12-31 10.1016/S0920-5632(02)01414-7 http://inspirehep.net/record/583318 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University 2016-08-08T12:32:45.4550402 2016-06-02T15:05:53.4087832 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Danielle Blythe 1 Jonathan Clowser 2 Chris Allton 0000-0003-0795-124X 3
title Spectral functions, maximum entropy method and unconventional methods in lattice field theory
spellingShingle Spectral functions, maximum entropy method and unconventional methods in lattice field theory
Chris Allton
title_short Spectral functions, maximum entropy method and unconventional methods in lattice field theory
title_full Spectral functions, maximum entropy method and unconventional methods in lattice field theory
title_fullStr Spectral functions, maximum entropy method and unconventional methods in lattice field theory
title_full_unstemmed Spectral functions, maximum entropy method and unconventional methods in lattice field theory
title_sort Spectral functions, maximum entropy method and unconventional methods in lattice field theory
author_id_str_mv de706a260fa1e1e47430693e135f41c7
author_id_fullname_str_mv de706a260fa1e1e47430693e135f41c7_***_Chris Allton
author Chris Allton
author2 Danielle Blythe
Jonathan Clowser
Chris Allton
format Journal article
container_title Nuclear Physics B - Proceedings Supplements
container_volume 109
container_issue 1
container_start_page 192
publishDate 2002
institution Swansea University
issn 09205632
doi_str_mv 10.1016/S0920-5632(02)01414-7
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
url http://inspirehep.net/record/583318
document_store_str 0
active_str 0
description We present two unconventional methods of extracting information from hadronic 2-point functions produced by Monte Carlo simulations. The first is an extension of earlier work by Leinweber which combines a QCD Sum Rule approach with lattice data. The second uses the Maximum Entropy Method to invert the 2-point data to obtain estimates of the spectral function. The first approach is applied to QCD data, and the second method is applied to the Nambu--Jona-Lasinio model in (2+1)D. Both methods promise to augment the current approach where physical quantities are extracted by fitting to pure exponentials.
published_date 2002-12-31T03:58:17Z
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score 11.096117

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