The QCD equation of state with asqtad staggered fermions
  We report on our result for the equation of state (EOS) with a Symanzik improved gauge action and the asqtad improved staggered fermion action at $N_t=4$ and 6. In our dynamical simulations with 2+1 flavors we use the inexact R algorithm and here we estimate the finite step-size systematic error on the EOS. Finally we discuss the non-zero chemical potential extension of the EOS and give some preliminary results. 
C. Bernard, T. Burch, C. DeTar, Steven Gottlieb, L. Levkova, U.M.   Heller, J.E. Hetrick, D.B. Renner, D. Toussaint, R. Sugar