Z(3) metastable states in Polyakov Quark Meson model

Abstract

We study the existence of Z(3) metastable states in the presence of the dynamical quarks within the ambit of Polyakov quark meson (PQM) model. Within the parameters of the model, it is seen that for temperatures $T_m$ greater than the chiral transition temperature $T_c$, Z(3) metastable states exist ( $T_m\sim 310$ MeV at zero chemical potential). At finite chemical potential $T_m$ is larger than the same at vanishing chemical potential. We also observe a shift of ($\sim 5^{\circ }$) in the phase of the metastable vacua at zero chemical potential. The energy density difference between true and Z(3) metastable vacua is very large in this model. This indicates a strong explicit symmetry breaking effect due to quarks in PQM model. We compare this explicit symmetry breaking in PQM model with small explicit symmetry breaking as a linear term in Polyakov loop added to the Polyakov loop potential. We also study about the possibility of domain growth in a quenched transition to QGP in relativistic heavy ion collisions.

16 pages, 11 figures

References in corpus (7)

• The Phase Structure of the Polyakov--Quark-Meson Model
• The chiral and deconfinement crossover transitions: PNJL model beyond mean field
• Thermal photons as a quark-gluon plasma thermometer revisited
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• Kinetics of Phase Transitions in Quark Matter
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Cited by in corpus (4)

• Transport coefficients in Polyakov quark meson coupling model: a relaxation time approximation
• Heavy quark diffusion in a Polyakov loop plasma
• $Z_3$ meta-stable states in PNJL model
• Primordial magnetic field generation in the Quark Gluon Plasma phase