Thermodynamic properties of QCD with two flavors of Wilson-type lattice quarks
Nuclear Physics A(2002)
摘要
I report on a study of finite temperature QCD by the CP-PACS Collaboration
toward a precise determination of the equation of state with dynamical u,d
quarks. Based on a systematic simulation using improved Wilson-type quarks on
lattices with temporal size $N_t=4$ and 6, the energy density and pressure are
calculated as functions of temperature and renormalized light quark mass in the
range $T/T_c \approx 0.7$--2.5 and $m_{\rm PS}/m_{\rm V} = 0.65$--0.95. Results
for $N_t=4$ are found to contain significant scaling violations, while results
for $N_t=6$ are suggested to be not far from the continuum limit. On the other
hand, the quark mass dependence in the EOS turned out to be small for $m_{\rm
PS}/m_{\rm V} \simlt 0.8$.
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关键词
qcd,thermodynamic properties,wilson-type
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