The Equation of state for two flavor QCD at nonzero chemical potential
Allton, C. R
Ejiri, S.
Hands, S. J
Kaczmarek, Olaf
Karsch, Frithjof
Laermann, Edwin
Schmidt, Christian
pressure
11.15.Ha
05.70.Ce
potential: chemical
numerical calculations: Monte Carlo
lattice field theory: action
Lattice
gauge field theory: SU(3)
flavor: 2
fermion number: density
thermodynamics
susceptibility
fermion: lattice field theory
entropy: density
energy: density
12.38.Gc
12.38.Mh
We present results of a simulation of QCD on a 4x16^3 lattice with 2 continuum flavors of p4-improved staggered fermion with mass m/T=0.4. Derivatives of the thermodynamic grand potential 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 Taylor series expansion. Discretisation effects associated with various staggered fermion formulations are discussed in some detail. In addition it is possible to estimate the radius of convergence of the expansion as a function of temperature. We also discuss the calculation of energy and entropy densities which are defined via mixed derivatives of the thermodynamic grand potential with respect to the bare couplings and quark masses.
2003
info:eu-repo/semantics/article
doc-type:article
text
https://pub.uni-bielefeld.de/record/1968881
Allton CR, Ejiri S, Hands SJ, et al. The Equation of state for two flavor QCD at nonzero chemical potential. <em>Phys.Rev. D</em>. 2003;68(1):014507.
eng
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.68.014507
info:eu-repo/semantics/altIdentifier/issn/0556-2821
info:eu-repo/semantics/altIdentifier/issn/1089-4918
info:eu-repo/semantics/altIdentifier/wos/000184583700047
info:eu-repo/semantics/closedAccess