The QCD phase diagram in the limit of heavy quarks using complex Langevin dynamics

Aarts, Gert; Attanasio, Felipe; Jäger, Benjamin; Sexty, Dénes

doi:10.1007/JHEP09(2016)087

Journal article 920 views 124 downloads

The QCD phase diagram in the limit of heavy quarks using complex Langevin dynamics

Gert Aarts

, Felipe Attanasio, Benjamin Jäger, Dénes Sexty

Journal of High Energy Physics, Volume: 2016, Issue: 9

Swansea University Author: Gert Aarts

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DOI (Published version): 10.1007/JHEP09(2016)087

Abstract

Complex Langevin simulations allow numerical studies of theories that exhibit a sign problem, such as QCD, and are thereby potentially suitable to determine the QCD phase diagram from first principles. Here we study QCD in the limit of heavy quarks for a wide range of temperatures and chemical poten...

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Published in:	Journal of High Energy Physics
ISSN:	1029-8479
Published:	2016
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa30316
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first_indexed	2016-10-03T13:07:24Z
last_indexed	2020-07-17T18:47:16Z
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spelling	2020-07-17T13:06:58.4449408 v2 30316 2016-10-03 The QCD phase diagram in the limit of heavy quarks using complex Langevin dynamics 1ba0dad382dfe18348ec32fc65f3f3de 0000-0002-6038-3782 Gert Aarts Gert Aarts true false 2016-10-03 SPH Complex Langevin simulations allow numerical studies of theories that exhibit a sign problem, such as QCD, and are thereby potentially suitable to determine the QCD phase diagram from first principles. Here we study QCD in the limit of heavy quarks for a wide range of temperatures and chemical potentials. Our results include an analysis of the adaptive gauge cooling technique, which prevents large excursions into the non-compact directions of the SL(3,C) manifold. We find that such excursions may appear spontaneously and change the statistical distribution of physical observables, which leads to disagreement with known results. Results whose excursions are sufficiently small are used to map the boundary line between confined and deconfined quark phases. Journal Article Journal of High Energy Physics 2016 9 1029-8479 15 9 2016 2016-09-15 10.1007/JHEP09(2016)087 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2020-07-17T13:06:58.4449408 2016-10-03T12:13:08.8768070 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Gert Aarts 0000-0002-6038-3782 1 Felipe Attanasio 2 Benjamin Jäger 3 Dénes Sexty 4 0030316-03102016140126.pdf JHEP1609087-1.pdf 2016-10-03T12:13:33.7130000 Output 5400640 application/pdf Version of Record true 2016-10-03T00:00:00.0000000 This article is distributed under the terms of the Creative Commons Attribution 4.0 International License true https://creativecommons.org/licenses/by/4.0
title	The QCD phase diagram in the limit of heavy quarks using complex Langevin dynamics
spellingShingle	The QCD phase diagram in the limit of heavy quarks using complex Langevin dynamics Gert Aarts
title_short	The QCD phase diagram in the limit of heavy quarks using complex Langevin dynamics
title_full	The QCD phase diagram in the limit of heavy quarks using complex Langevin dynamics
title_fullStr	The QCD phase diagram in the limit of heavy quarks using complex Langevin dynamics
title_full_unstemmed	The QCD phase diagram in the limit of heavy quarks using complex Langevin dynamics
title_sort	The QCD phase diagram in the limit of heavy quarks using complex Langevin dynamics
author_id_str_mv	1ba0dad382dfe18348ec32fc65f3f3de
author_id_fullname_str_mv	1ba0dad382dfe18348ec32fc65f3f3de_***_Gert Aarts
author	Gert Aarts
author2	Gert Aarts Felipe Attanasio Benjamin Jäger Dénes Sexty
format	Journal article
container_title	Journal of High Energy Physics
container_volume	2016
container_issue	9
publishDate	2016
institution	Swansea University
issn	1029-8479
doi_str_mv	10.1007/JHEP09(2016)087
college_str	Faculty of Science and Engineering
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hierarchy_top_id	facultyofscienceandengineering
hierarchy_top_title	Faculty of Science and Engineering
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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
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description	Complex Langevin simulations allow numerical studies of theories that exhibit a sign problem, such as QCD, and are thereby potentially suitable to determine the QCD phase diagram from first principles. Here we study QCD in the limit of heavy quarks for a wide range of temperatures and chemical potentials. Our results include an analysis of the adaptive gauge cooling technique, which prevents large excursions into the non-compact directions of the SL(3,C) manifold. We find that such excursions may appear spontaneously and change the statistical distribution of physical observables, which leads to disagreement with known results. Results whose excursions are sufficiently small are used to map the boundary line between confined and deconfined quark phases.
published_date	2016-09-15T03:37:00Z
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The QCD phase diagram in the limit of heavy quarks using complex Langevin dynamics

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