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Simulating QCD at nonzero baryon density to all orders in the hopping parameter expansion

Gert Aarts Orcid Logo, Erhard Seiler, Dénes Sexty, Ion-Olimpiu Stamatescu

Physical Review D, Volume: 90, Issue: 11

Swansea University Author: Gert Aarts Orcid Logo

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DOI (Published version): 10.1103/PhysRevD.90.114505

Abstract

Progress in simulating QCD at nonzero baryon density requires, amongst others, substantial numerical effort. Here we propose two different expansions to all orders in the hopping parameter, preserving the full Yang-Mills action, which are much cheaper to simulate. We carry out simulations using comp...

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Published in: Physical Review D
ISSN: 1550-7998 1550-2368
Published: 2014
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URI: https://cronfa.swan.ac.uk/Record/cronfa20491
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last_indexed 2019-08-09T15:00:05Z
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spelling 2019-08-08T11:08:18.3625390 v2 20491 2015-03-19 Simulating QCD at nonzero baryon density to all orders in the hopping parameter expansion 1ba0dad382dfe18348ec32fc65f3f3de 0000-0002-6038-3782 Gert Aarts Gert Aarts true false 2015-03-19 SPH Progress in simulating QCD at nonzero baryon density requires, amongst others, substantial numerical effort. Here we propose two different expansions to all orders in the hopping parameter, preserving the full Yang-Mills action, which are much cheaper to simulate. We carry out simulations using complex Langevin dynamics, both in the hopping expansions and in the full theory, for two flavours of Wilson fermions, and agreement is seen at sufficiently high order in the expansion. These results provide support for the use of complex Langevin dynamics to study QCD at nonzero density, both in the full and the expanded theory, and for the convergence of the latter. Journal Article Physical Review D 90 11 1550-7998 1550-2368 17 12 2014 2014-12-17 10.1103/PhysRevD.90.114505 http://journals.aps.org/prd/abstract/10.1103/PhysRevD.90.114505 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2019-08-08T11:08:18.3625390 2015-03-19T15:29:47.2410427 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Gert Aarts 0000-0002-6038-3782 1 Erhard Seiler 2 Dénes Sexty 3 Ion-Olimpiu Stamatescu 4 0020491-25032015162504.pdf 1408.3770v2.pdf 2015-03-25T16:25:04.4670000 Output 164347 application/pdf Version of Record true 2015-03-25T00:00:00.0000000 true
title Simulating QCD at nonzero baryon density to all orders in the hopping parameter expansion
spellingShingle Simulating QCD at nonzero baryon density to all orders in the hopping parameter expansion
Gert Aarts
title_short Simulating QCD at nonzero baryon density to all orders in the hopping parameter expansion
title_full Simulating QCD at nonzero baryon density to all orders in the hopping parameter expansion
title_fullStr Simulating QCD at nonzero baryon density to all orders in the hopping parameter expansion
title_full_unstemmed Simulating QCD at nonzero baryon density to all orders in the hopping parameter expansion
title_sort Simulating QCD at nonzero baryon density to all orders in the hopping parameter expansion
author_id_str_mv 1ba0dad382dfe18348ec32fc65f3f3de
author_id_fullname_str_mv 1ba0dad382dfe18348ec32fc65f3f3de_***_Gert Aarts
author Gert Aarts
author2 Gert Aarts
Erhard Seiler
Dénes Sexty
Ion-Olimpiu Stamatescu
format Journal article
container_title Physical Review D
container_volume 90
container_issue 11
publishDate 2014
institution Swansea University
issn 1550-7998
1550-2368
doi_str_mv 10.1103/PhysRevD.90.114505
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://journals.aps.org/prd/abstract/10.1103/PhysRevD.90.114505
document_store_str 1
active_str 0
description Progress in simulating QCD at nonzero baryon density requires, amongst others, substantial numerical effort. Here we propose two different expansions to all orders in the hopping parameter, preserving the full Yang-Mills action, which are much cheaper to simulate. We carry out simulations using complex Langevin dynamics, both in the hopping expansions and in the full theory, for two flavours of Wilson fermions, and agreement is seen at sufficiently high order in the expansion. These results provide support for the use of complex Langevin dynamics to study QCD at nonzero density, both in the full and the expanded theory, and for the convergence of the latter.
published_date 2014-12-17T03:24:15Z
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score 11.016235

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