Correlations and fluctuations from lattice QCD

Abstract

We present the new results of the Wuppertal-Budapest lattice QCD collaboration on flavor diagonal and non-diagonal quark number susceptibilities with 2+1 staggered quark flavors in a temperature regime between 120 and 400 MeV. A Symanzik improved gauge and a stout-link improved staggered fermion action is utilized; the light and strange quark masses are set to their physical values. Lattices with Nt = 6, 8, 10, 12 are used. We perform a continuum extrapolation of those observables for which the scaling regime is reached, and discretization errors are under control.