---
res:
bibo_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 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.@eng
bibo_authorlist:
- foaf_Person:
foaf_givenName: S.
foaf_name: Ejiri, S.
foaf_surname: Ejiri
- foaf_Person:
foaf_givenName: C. R
foaf_name: Allton, C. R
foaf_surname: Allton
- foaf_Person:
foaf_givenName: S. J
foaf_name: Hands, S. J
foaf_surname: Hands
- foaf_Person:
foaf_givenName: Olaf
foaf_name: Kaczmarek, Olaf
foaf_surname: Kaczmarek
foaf_workInfoHomepage: http://www.librecat.org/personId=33776
- foaf_Person:
foaf_givenName: Frithjof
foaf_name: Karsch, Frithjof
foaf_surname: Karsch
foaf_workInfoHomepage: http://www.librecat.org/personId=40326
- foaf_Person:
foaf_givenName: Edwin
foaf_name: Laermann, Edwin
foaf_surname: Laermann
foaf_workInfoHomepage: http://www.librecat.org/personId=40621
- foaf_Person:
foaf_givenName: Christian
foaf_name: Schmidt, Christian
foaf_surname: Schmidt
foaf_workInfoHomepage: http://www.librecat.org/personId=3793169
bibo_doi: 10.1016/S0920-5632(03)02636-7
bibo_volume: 129/130
dct_date: 2004^xs_gYear
dct_identifier:
- UT:000220478100135
dct_isPartOf:
- http://id.crossref.org/issn/0920-5632
dct_language: eng
dct_subject:
- 'fermion number: density'
- 'fermion: lattice field theory'
- 'flavor: 2'
- finite temperature
- 'gauge field theory: SU(3)'
- 'numerical calculations: Monte Carlo'
- pressure
- susceptibility
- 'talk: Tsukuba 2003/07/15'
- Taylor expansion
- critical phenomena
- 'density: finite'
dct_title: The Equation of state for two flavor QCD at finite density@
...