Critical point of QCD at finite T and μ, lattice results for physical quark masses

Zoltan Fodor, Sandor D. Katz

Research output: Contribution to journalArticlepeer-review

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Abstract

A critical point (E) is expected in QCD on the temperature (T) versus baryonic chemical potential (μ) plane. Using a recently proposed lattice method for μ ≠ 0 we study dynamical QCD with nf = 2+1 staggered quarks of physical masses on Lt = 4 lattices. Our result for the critical point is TE = 162 ± 2MeV and μE = 360 ± 40MeV. For the critical temperature at μ = 0 we obtained T c = 164 ± 2 MeV. This work extends our previous study [8] by two means. It decreases the light quark masses (mu,d) by a factor of three down to their physical values. Furthermore, in order to approach the thermodynamical limit we increase our largest volume by a factor of three. As expected, decreasing mu,d decreased μE. Note, that the continuum extrapolation is still missing. Institute for Theoretical Physics, Eötvös University, Hungary.

Original languageEnglish (US)
Article number050
JournalJournal of High Energy Physics
Volume8
Issue number4
StatePublished - Apr 1 2004

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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