Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1996-05-24
Phys.Rev. D54 (1996) 7010-7031
Physics
High Energy Physics
High Energy Physics - Lattice
uuencoded compressed tar file, 70 pages, 32 figures
Scientific paper
10.1103/PhysRevD.54.7010
The nature of finite temperature transitions in lattice QCD with Wilson quarks is studied near the chiral limit for the cases of 2, 3, and 6 flavors of degenerate quarks ($N_F=2$, 3, and 6) and also for the case of massless up and down quarks and a light strange quark ($N_F=2+1$). Our simulations mainly performed on lattices with the temporal direction extension $N_t=4$ indicate that the finite temperature transition in the chiral limit (chiral transition) is continuous for $N_F=2$, while it is of first order for $N_F=3$ and 6. We find that the transition is of first order for the case of massless up and down quarks and the physical strange quark where we obtain a value of $m_\phi/m_\rho$ consistent with the physical value. We also discuss the phase structure at zero temperature as well as that at finite temperatures.
Iwasaki Yoshihito
Kanaya Kazuyuki
Kaya S.
Sakai Shoko
Yoshié Tomoteru
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