Curvature of the chiral pseudo-critical line in QCD: continuum extrapolated results

Claudio Bonati; Francesco Negro; Francesco Sanfilippo; Marco Mariti; Massimo D'Elia; Michele Mesiti

Curvature of the chiral pseudo-critical line in QCD: continuum extrapolated results

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arxiv 1507.03571 v2 pith:GKDGHNAK submitted 2015-07-13 hep-lat hep-phhep-thnucl-th

Curvature of the chiral pseudo-critical line in QCD: continuum extrapolated results

Claudio Bonati , Massimo D'Elia , Marco Mariti , Michele Mesiti , Francesco Negro , Francesco Sanfilippo This is my paper

classification hep-lat hep-phhep-thnucl-th

keywords continuumcurvaturelinepseudo-criticalresultsactionchemicalchiral

verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved

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We determine the curvature of the pseudo-critical line of strong interactions by means of numerical simulations at imaginary chemical potentials. We consider $N_f=2+1$ 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 $N_t = 6,8,10,12$, in order to extrapolate results to the continuum limit. Our final estimate is $\kappa = 0.0135(20)$.

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