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The nature of the finite temperature QCD transition as a function of the quark masses

Presenter: Gergely Endrodi — Eotvos University, Budapest, Hungary

G. Endrodi, Z. Fodor, S.D. Katz, K.K. Szabo

The finite temperature QCD transition for physical quark masses is a cross-over. For smaller quark masses a first order phase transition is expected. Using Symanzik improved gauge and stout improved fermion action for 2+1 flavour staggered QCD we give estimates/bounds for the phase line separating the first order region from the cross-over one. The calculations are carried out on Nt=4 lattices.