Thermodynamics at nonzero baryon number density: A Comparison of lattice and hadron resonance gas model calculations

Jun, 2003
15 pages
Published in:
  • Phys.Lett.B 571 (2003) 67-74
e-Print:
Report number:
  • BI-TP-2003-16

Citations per year

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Abstract:
We compare recent lattice studies of QCD thermodynamics at non-zero quark chemical potential with the thermodynamics of a hadron resonance gas. We argue that for T < Tc the equation of state derived from Monte--Carlo simulations of two flavour QCD at non-zero chemical potential can be well described by a hadron resonance gas when using the same set of approximations as used in current lattice calculations. We estimate the importance of truncation errors arising from the use of a Taylor expansion in terms of the quark chemical potential and examine the influence of unphysically large quark masses on the equation of state and the critical conditions for deconfinement.
Note:
  • 15 pages, LaTex2e, 6 EPS-figures, minor corrections, reference added
  • quantum chromodynamics
  • thermodynamics
  • lattice field theory
  • potential: chemical
  • baryon number: density
  • hadron: gas
  • flavor: 2
  • numerical calculations