Impact of baryon resonances on the chiral phase transition at finite temperature and density

Details Impact of baryon resonances on the chiral phase transition at finite temperature and density Impact of baryon resonances on the chiral phase transition at finite temperature and density

2004-07-30

arxiv.org/abs/nucl-th/0407117v2

J.Phys.G31:935-946,2005

Physics

Nuclear Physics

Nuclear Theory

18 pages, 7 figures

Scientific paper

10.1088/0954-3899/31/8/022

We study the phase diagram of a generalized chiral SU(3)-flavor model in mean-field approximation. In particular, the influence of the baryon resonances, and their couplings to the scalar and vector fields, on the characteristics of the chiral phase transition as a function of temperature and baryon-chemical potential is investigated. Present and future finite-density lattice calculations might constrain the couplings of the fields to the baryons. The results are compared to recent lattice QCD calculations and it is shown that it is non-trivial to obtain, simultaneously, stable cold nuclear matter.

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