Journal article 866 views
The QCD equation of state for two flavours at non-zero chemical potential
Nuclear Physics A, Volume: 774, Pages: 837 - 840
Swansea University Author:
Chris Allton
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DOI (Published version): 10.1016/j.nuclphysa.2006.06.023
Abstract
We present results of a simulation of 2 flavour QCD on a $16^3\times4$ lattice using p4-improved staggered fermions with bare quark mass $m/T=0.4$. Derivatives of the thermodynamic grand canonical partition function $Z(V,T,\mu_u,\mu_d)$ with respect to chemical potentials $\mu_{u,d}$ for different q...
Published in: | Nuclear Physics A |
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ISSN: | 03759474 |
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2006
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URI: | https://cronfa.swan.ac.uk/Record/cronfa28428 |
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2016-08-08T12:44:23.2240156 v2 28428 2016-06-02 The QCD equation of state for two flavours at non-zero chemical potential de706a260fa1e1e47430693e135f41c7 0000-0003-0795-124X Chris Allton Chris Allton true false 2016-06-02 SPH We present results of a simulation of 2 flavour QCD on a $16^3\times4$ lattice using p4-improved staggered fermions with bare quark mass $m/T=0.4$. Derivatives of the thermodynamic grand canonical partition function $Z(V,T,\mu_u,\mu_d)$ with respect to chemical potentials $\mu_{u,d}$ for different quark flavours are calculated up to sixth order, enabling estimates of the pressure and the quark number density as well as the chiral condensate and various susceptibilities as functions of $\mu_{u,d}$ via Taylor series expansion. Results are compared to high temperature perturbation theory as well as a hadron resonance gas model. We also analyze baryon as well as isospin fluctuations and discuss the relation to the chiral critical point in the QCD phase diagram. We moreover discuss the dependence of the heavy quark free energy on the chemical potential. Journal Article Nuclear Physics A 774 837 840 03759474 31 12 2006 2006-12-31 10.1016/j.nuclphysa.2006.06.023 http://inspirehep.net/record/693756 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2016-08-08T12:44:23.2240156 2016-06-02T15:05:46.0299359 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics S. Ejiri 1 E. Laermann 2 F. Karsch 3 K. Redlich 4 S.J. Hands 0000-0001-5720-7852 5 O. Kaczmarek 6 M. Doring 7 Chris Allton 0000-0003-0795-124X 8 |
title |
The QCD equation of state for two flavours at non-zero chemical potential |
spellingShingle |
The QCD equation of state for two flavours at non-zero chemical potential Chris Allton |
title_short |
The QCD equation of state for two flavours at non-zero chemical potential |
title_full |
The QCD equation of state for two flavours at non-zero chemical potential |
title_fullStr |
The QCD equation of state for two flavours at non-zero chemical potential |
title_full_unstemmed |
The QCD equation of state for two flavours at non-zero chemical potential |
title_sort |
The QCD equation of state for two flavours at non-zero chemical potential |
author_id_str_mv |
de706a260fa1e1e47430693e135f41c7 |
author_id_fullname_str_mv |
de706a260fa1e1e47430693e135f41c7_***_Chris Allton |
author |
Chris Allton |
author2 |
S. Ejiri E. Laermann F. Karsch K. Redlich S.J. Hands O. Kaczmarek M. Doring Chris Allton |
format |
Journal article |
container_title |
Nuclear Physics A |
container_volume |
774 |
container_start_page |
837 |
publishDate |
2006 |
institution |
Swansea University |
issn |
03759474 |
doi_str_mv |
10.1016/j.nuclphysa.2006.06.023 |
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/693756 |
document_store_str |
0 |
active_str |
0 |
description |
We present results of a simulation of 2 flavour QCD on a $16^3\times4$ lattice using p4-improved staggered fermions with bare quark mass $m/T=0.4$. Derivatives of the thermodynamic grand canonical partition function $Z(V,T,\mu_u,\mu_d)$ with respect to chemical potentials $\mu_{u,d}$ for different quark flavours are calculated up to sixth order, enabling estimates of the pressure and the quark number density as well as the chiral condensate and various susceptibilities as functions of $\mu_{u,d}$ via Taylor series expansion. Results are compared to high temperature perturbation theory as well as a hadron resonance gas model. We also analyze baryon as well as isospin fluctuations and discuss the relation to the chiral critical point in the QCD phase diagram. We moreover discuss the dependence of the heavy quark free energy on the chemical potential. |
published_date |
2006-12-31T03:34:34Z |
_version_ |
1763751466515824640 |
score |
11.021648 |