Curvature of the chiral pseudo-critical line in QCD: continuum extrapolated results
Abstract
We determine the curvature of the pseudo-critical line of strong interactions by means of numerical simulations at imaginary chemical potentials. We consider Nf=2+1 stout improved staggered fermions with physical quark masses and the tree level Symanzik gauge action, and explore four different sets of lattice spacings, corresponding to Nt = 6,8,10,12, in order to extrapolate results to the continuum limit. Our final estimate is = 0.0135(20).
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