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The equation of state for two flavor QCD at finite density / S. Ejiri, E. Laermann, F. Karsch, C. Schmidt, S.J. Hands, O. Kaczmarek, Chris Allton

Nuclear Physics B - Proceedings Supplements, Volume: 129-130, Pages: 545 - 547

Swansea University Author: Chris Allton

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Abstract

We discuss the equation of state for QCD at non-zero temperature and density. We present results of a simulation for QCD with 2 flavors of p4-improved staggered fermions. Derivatives of $\ln {\cal Z}$ with respect to quark chemical potential $\mu_q$ up to fourth order are calculated, enabling estima...

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Published in: Nuclear Physics B - Proceedings Supplements
ISSN: 09205632
Published: 2004
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URI: https://cronfa.swan.ac.uk/Record/cronfa28432
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first_indexed 2016-06-02T18:23:30Z
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spelling 2016-08-08T12:42:36.1281458 v2 28432 2016-06-02 The equation of state for two flavor QCD at finite density de706a260fa1e1e47430693e135f41c7 0000-0003-0795-124X Chris Allton Chris Allton true false 2016-06-02 SPH We discuss the equation of state for QCD at non-zero temperature and density. We present results of a simulation for QCD with 2 flavors of p4-improved staggered fermions. Derivatives of $\ln {\cal Z}$ with respect to quark chemical potential $\mu_q$ up to fourth order are calculated, enabling estimates of the pressure, quark number density and associated susceptibilities as functions of $\mu_q$ via a Taylor series expansion. We also discuss the radius of convergence of the expansion as a function of temperature. It is found that the fluctuations in the quark number density increase in the vicinity of the phase transition temperature and the susceptibilities start to develop a pronounced peak as $\mu_q$ is increased. This suggests the presence of a critical endpoint in the $(T, \mu_q)$ plane. Journal Article Nuclear Physics B - Proceedings Supplements 129-130 545 547 09205632 31 12 2004 2004-12-31 10.1016/S0920-5632(03)02636-7 http://inspirehep.net/record/628167 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2016-08-08T12:42:36.1281458 2016-06-02T15:05:50.3355635 College of Science Physics S. Ejiri 1 E. Laermann 2 F. Karsch 3 C. Schmidt 4 S.J. Hands 0000-0001-5720-7852 5 O. Kaczmarek 6 Chris Allton 0000-0003-0795-124X 7
title The equation of state for two flavor QCD at finite density
spellingShingle The equation of state for two flavor QCD at finite density
Chris, Allton
title_short The equation of state for two flavor QCD at finite density
title_full The equation of state for two flavor QCD at finite density
title_fullStr The equation of state for two flavor QCD at finite density
title_full_unstemmed The equation of state for two flavor QCD at finite density
title_sort The equation of state for two flavor QCD at finite density
author_id_str_mv de706a260fa1e1e47430693e135f41c7
author_id_fullname_str_mv de706a260fa1e1e47430693e135f41c7_***_Chris, Allton
author Chris, Allton
author2 S. Ejiri
E. Laermann
F. Karsch
C. Schmidt
S.J. Hands
O. Kaczmarek
Chris Allton
format Journal article
container_title Nuclear Physics B - Proceedings Supplements
container_volume 129-130
container_start_page 545
publishDate 2004
institution Swansea University
issn 09205632
doi_str_mv 10.1016/S0920-5632(03)02636-7
college_str College of Science
hierarchytype
hierarchy_top_id collegeofscience
hierarchy_top_title College of Science
hierarchy_parent_id collegeofscience
hierarchy_parent_title College of Science
department_str Physics{{{_:::_}}}College of Science{{{_:::_}}}Physics
url http://inspirehep.net/record/628167
document_store_str 0
active_str 0
description We discuss the equation of state for QCD at non-zero temperature and density. We present results of a simulation for QCD with 2 flavors of p4-improved staggered fermions. Derivatives of $\ln {\cal Z}$ with respect to quark chemical potential $\mu_q$ up to fourth order are calculated, enabling estimates of the pressure, quark number density and associated susceptibilities as functions of $\mu_q$ via a Taylor series expansion. We also discuss the radius of convergence of the expansion as a function of temperature. It is found that the fluctuations in the quark number density increase in the vicinity of the phase transition temperature and the susceptibilities start to develop a pronounced peak as $\mu_q$ is increased. This suggests the presence of a critical endpoint in the $(T, \mu_q)$ plane.
published_date 2004-12-31T03:43:35Z
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