ar X iv : 0 91 0 . 02 76 v 1 [ he p - la t ] 1 O ct 2 00 9 QCD equation of state at non - zero chemical potential

S. Basak,a A. Bazavov, b C. Bernard, c C. DeTar,d W. Freeman,b Steven Gottlieb∗,a U.M. Heller,e J.E. Hetrick, f J. Laiho,c L. Levkova,d J. Osborn,g R. Sugar,h and D. Toussaintb MILC Collaboration a Department of Physics, Indiana University Bloomington, IN 47405, USA b Physics Department, University of Arizona Tucson, AZ 85721, USA c Physics Department, Washington University St. Louis, MO 63130, USA d Physics Department, University of Utah Salt Lake City, UT 84112, USA e American Physical Society One Research Road, Box 9000, Ridge, NY 11961-9000, USA f Physics Department, University of the Pacific Stockton, CA 95211, USA g Argonne Leadership Computing Facility, Argonne National Laboratory Argonne, IL 60439, USA h Physics Department, University of California Santa Barbara, CA 93106, USA E-mail: sg AT indiana.edu