Finite-temperature phase transition of N_f=3 QCD with exact center symmetry

2015/10/25 by Misumi, Tatsuhiro, Iritani, Takumi, Itou, Etsuko · 1 citation
#FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th)

paper · doi:10.48550/arxiv.1510.07227

Abstract

For the Z₃-symmetric lattice QCD-like theory (Z₃-QCD), in which SU(3) gauge theory is coupled with three fundamental Wilson quarks with flavor-dependent twisted boundary conditions, we calculate the expectation values of Polyakov loop and chiral condensate as functions of temperature on 16³ ×4 and 20³ × 4 lattices with m_PS/m_V=0.70 fixed. We find the first-order phase transition with respect to the Z₃ center symmetry, where the Polyakov loop exhibits a hysteresis depending on the initial condition of thermalization process. We also show that the crossover behavior of chiral condensate around the critical temperature of the center transition and the manifestation of flavor symmetry breaking in the high-temperature phase.

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• ℤ_N stability and continuity in twisted Eguchi-Kawai model with two-flavor adjoint fermions

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