Thermodynamics of (2+1)-flavor QCD: Confronting Models with Lattice Studies
Abstract
The Polyakov-quark-meson (PQM) model, which combines chiral as well as deconfinement aspects of strongly interacting matter is introduced for three light quark flavors. An analysis of the chiral and deconfinement phase transition of the model and its thermodynamics at finite temperatures is given. Three different forms of the effective Polyakov loop potential are considered. The findings of the (2+1)-flavor model investigations are confronted to corresponding recent QCD lattice simulations of the RBC-Bielefeld, HotQCD and Wuppertal-Budapest collaborations. The influence of the heavier quark masses, which are used in the lattice calculations, is taken into account. In the transition region the bulk thermodynamics of the PQM model agrees well with the lattice data.
Keywords
Cite
@article{arxiv.0910.5628,
title = {Thermodynamics of (2+1)-flavor QCD: Confronting Models with Lattice Studies},
author = {Bernd-Jochen Schaefer and Mathias Wagner and Jochen Wambach},
journal= {arXiv preprint arXiv:0910.5628},
year = {2010}
}
Comments
13 pages, 7 figures, 3 tables; minor changes, final version to appear in Phys. Rev. D