The phase diagram in the vector meson extended linear sigma model

2017/11/29 by G. Wolf, Péter Kovács, Wolf, Gy. +1
Physics and Astronomy · #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions #Pulsars and Gravitational Waves Research

paper · doi:10.48550/arxiv.1711.10879

Abstract

We investigate the chiral phase transition of the strongly interacting matter at nonzero temperature and baryon chemical potential μ_B within an extended (2+1) flavor Polyakov constituent quark-meson model which incorporates the effect of the vector and axial vector mesons. The parameters of the model are determined by comparing masses and tree-level decay widths with experimental values. We examine the restoration of the chiral symmetry by monitoring the temperature evolution of condensates. We study the T-ρ_B phase diagram of the model and find that a critical end point exists, although at very low density.

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