Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1997-08-19
Nucl.Phys.Proc.Suppl. 60A (1998) 188-194
Physics
High Energy Physics
High Energy Physics - Lattice
Talk presented by M. Okawa at the International Workshop on `` LATTICE QCD ON PARALLEL COMPUTERS", 10-15 March 1997, Center fo
Scientific paper
10.1016/S0920-5632(97)00480-5
Report is made of a systematic scaling study of the finite-temperature chiral phase transition of two-flavor QCD with the Kogut-Susskind quark action based on simulations on $L^3\times4$ ($L$=8, 12 and 16) lattices at the quark mass of $m_q=0.075, 0.0375, 0.02$ and 0.01. Our finite-size data show that a phase transition is absent for $m_q\geq 0.02$, and quite likely also at $m_q=0.01$. The scaling behavior of susceptibilities as a function of $m_q$ is consistent with a second-order transition at $m_q=0$. However, the exponents deviate from the O(2) or O(4) values theoretically expected.
Aoki Sadao
Fukugita Masaaka
Hashimoto Shigehira
Ishizuka Naruhito
Iwasaki Yoshihito
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