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

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

1999-03-15

arxiv.org/abs/hep-lat/9903024v2

Physics

High Energy Physics

High Energy Physics - Lattice

RevTeX, 7 pages, 6 eps figures, contribution to DPF99, corrected last reference

Scientific paper

Results from numerical simulations of full, two flavor QCD thermodynamics at N_t=4 with domain wall fermions are presented. For the first time a numerical simulation of the full QCD phase transition displays a low temperature phase with spontaneous chiral symmetry breaking but intact flavor symmetry and a high temperature phase with the full $SU(2) \times SU(2)$ chiral flavor symmetry. It is found that close to the transition in the high temperature phase the U(1)_A axial symmetry is broken only by a small amount. This result is of particular interest because of the connection between U(1)_A symmetry breaking and the expected order of the transition.

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