The QCD equation of state at finite T and \mu
  We calculate the pressure (p), the energy density (\epsilon) and the baryon density (n_B) of QCD at finite temperatures (T) and chemical potentials (\mu). The recently proposed overlap improving multi-parameter reweighting technique is used to determine observables at nonvanishing chemical potentials. Our results are obtained by studying n_f=2+1 dynamical staggered quarks with semi-realistic masses on N_t=4 lattices. 
F. Csikor, G.I. Egri, Z. Fodor, S.D. Katz, K.K. Szabo, A.I. Toth