Dynamical lattice QCD thermodynamics and the U(1)_A symmetry with domain\n wall fermions

1999/03/15 by Pavlos Vranas, Vranas, Pavlos
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Physics of Superconductivity and Magnetism #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.hep-lat/9903024

openalex publication_date 1999/03/15 · openalex created_date 2022/10/03 · openalex updated_date 2026/07/28

Abstract

Results from numerical simulations of full, two flavor QCD thermodynamics at\nN_t=4 with domain wall fermions are presented. For the first time a numerical\nsimulation of the full QCD phase transition displays a low temperature phase\nwith spontaneous chiral symmetry breaking but intact flavor symmetry and a high\ntemperature phase with the full SU(2) \× SU(2) chiral flavor symmetry. It\nis found that close to the transition in the high temperature phase the U(1)_A\naxial symmetry is broken only by a small amount. This result is of particular\ninterest because of the connection between U(1)_A symmetry breaking and the\nexpected order of the transition.\n

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