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Nature of the finite temperature transition in QCD with strange quark

Dec, 1994
3 pages
Published in:
  • Nucl.Phys.B Proc.Suppl. 42 (1995) 499-501
Contribution to:
e-Print:
DOI:
Report number:
  • UTHEP-290
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Abstract: (DESY)
The finite temperature transition in QCD is studied using Wilson quarks for the cases of NF=2N_F=2, 3 and 2+1. For NF=2N_F=2 the transition is smooth in the chiral limit on both \nt=4 and 6 lattices. For NF=3N_F=3, clear two state signals are observed for β≤4.7\beta\leq4.7 on 8 2×10×48~2\times10 \times4 and 12 3×412~3\times4 lattices, which implies the transition is first order for m_q \simm{<} 140 MeV. For NF=2+1N_F=2+1 we study two cases of ms≃150m_s \simeq 150 and 400 MeV with mu=md≃0m_u=m_d \simeq 0. In contrast to a previous result with staggered quarks, two state signals are clearly observed for both cases, suggesting a first order QCD phase transition in the real world.
  • talk
  • fermion: lattice field theory
  • gauge field theory
  • critical phenomena: finite temperature
  • quark: strangeness
  • dependence: flavor
  • quark: mass
  • mass: quark
  • numerical calculations: Monte Carlo