On the phase structure of QCD with Wilson fermions

Details On the phase structure of QCD with Wilson fermions On the phase structure of QCD with Wilson fermions

1995-09-07

arxiv.org/abs/hep-lat/9509008v1

Prog.Theor.Phys.Suppl.122:179-186,1996

Physics

High Energy Physics

High Energy Physics - Lattice

14 pages (6 figures), latex (epsf style-file needed), talk presented at ''QCD on massively parallel computers'' (Yamagata, Jap

Scientific paper

10.1143/PTPS.122.179

The phase structure of lattice QCD with Wilson fermions is discussed. Analytic and numerical evidences are given for the spontaneous breaking of parity and flavor symmetry, which naturally explains the existence of the massless pion at the critical hopping parameter $K_c$ without recourse to the chiral symmetry absent in the Wilson fermion formulation. New numerical evidences are also presented for the multiple structure of the critical lines in the weak coupling region. A connection between the phase structure and the finite temperature phase transition is briefly mentioned.

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