Thermodynamics at nonzero baryon number density: A Comparison of lattice and hadron resonance gas model calculations
Jun, 200315 pages
Published in:
- Phys.Lett.B 571 (2003) 67-74
e-Print:
- hep-ph/0306208 [hep-ph]
Report number:
- BI-TP-2003-16
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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
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