Phase Diagram of QCD at Finite Temperatures with Wilson Fermions

Details Phase Diagram of QCD at Finite Temperatures with Wilson Fermions Phase Diagram of QCD at Finite Temperatures with Wilson Fermions

1994-12-27

arxiv.org/abs/hep-lat/9412103v1

Nucl.Phys.Proc.Suppl. 42 (1995) 96-102

Physics

High Energy Physics

High Energy Physics - Lattice

ps file, 7 pages with 5 figures, contribution to Lattice 94'

Scientific paper

10.1016/0920-5632(95)00191-B

Phase diagram of QCD with Wilson fermions for various numbers of flavors $N_F$ is discussed. Our simulations mainly performed on a lattice with the temporal size $N_t =4$ indicate the following: The chiral phase transition is of first order when $3 \le N_F \le 6$, while it is continuous when $N_F=2$. For the realistic case of massless u and d quarks and the strange quark with $m_q = 150$ MeV, the phase transition is first order. The sharp transition in the intermediate mass region for $N_F=2$ at $N_t=4$ observed by the MILC group disappears when an RG improvement is made for the pure gauge action.

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