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Charm Quarks and the QCD Equation of State

Presenter: Michael Cheng — Columbia University

M. Cheng, RBC-Bielefeld Collaboration

We present a study of the effect of charm quarks on the QCD equation of state using partially-quenched p4 charm quarks on a dynamically generated 2+1 flavor background, at zero chemical potential. We show preliminary results for the charm quark contribution to the energy and pressure in the high temperature region (Tc < T < 4 Tc) and compare it to the free-field calculation. The charm quark mass is determined by measuring the charmonium spectrum.