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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:

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DOI (Published version): 10.1016/S0920-5632(03)02636-7

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 09205632 2004 https://cronfa.swan.ac.uk/Record/cronfa28432 No Tags, Be the first to tag this record!
first_indexed 2016-06-02T18:23:30Z 2018-02-09T05:12:32Z cronfa28432 SURis 2016-08-08T12:42:36.1281458v2284322016-06-02The equation of state for two flavor QCD at finite densityde706a260fa1e1e47430693e135f41c70000-0003-0795-124XChrisAlltonChris Alltontruefalse2016-06-02SPHWe 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 ArticleNuclear Physics B - Proceedings Supplements129-13054554709205632311220042004-12-3110.1016/S0920-5632(03)02636-7http://inspirehep.net/record/628167COLLEGE NANMEPhysicsCOLLEGE CODESPHSwansea University2016-08-08T12:42:36.12814582016-06-02T15:05:50.3355635College of SciencePhysicsS.Ejiri1E.Laermann2F.Karsch3C.Schmidt4S.J.Hands0000-0001-5720-78525O.Kaczmarek6ChrisAllton0000-0003-0795-124X7 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 The equation of state for two flavor QCD at finite density The equation of state for two flavor QCD at finite density Chris, Allton The equation of state for two flavor QCD at finite density The equation of state for two flavor QCD at finite density The equation of state for two flavor QCD at finite density The equation of state for two flavor QCD at finite density The equation of state for two flavor QCD at finite density de706a260fa1e1e47430693e135f41c7 de706a260fa1e1e47430693e135f41c7_***_Chris, Allton Chris, Allton S. Ejiri E. Laermann F. Karsch C. Schmidt S.J. Hands O. Kaczmarek Chris Allton Journal article Nuclear Physics B - Proceedings Supplements 129-130 545 2004 Swansea University 09205632 10.1016/S0920-5632(03)02636-7 College of Science collegeofscience College of Science collegeofscience College of Science Physics{{{_:::_}}}College of Science{{{_:::_}}}Physics http://inspirehep.net/record/628167 0 0 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. 2004-12-31T03:43:35Z 1711568181576859648 10.821355