We present results on the QCD equation of state, obtained with two different improved dynamical staggered fermion actions and almost physical quark masses. Lattice cut-off effect are discussed in detail as results for three different lattice spacings are available now, i.e. results have been obtained on lattices with temporal extent of Nτ=4,6 and 8. Furthermore we discuss the Taylor expansion approach to non-zero baryon chemical potential and present the isentropic equation of state on lines of constant entropy per baryon number.
@article{arxiv.0810.0374,
title = {Lattice QCD thermodynamic results with improved staggered fermions},
author = {Christian Schmid and for RBC-Bielefeld and HotQCD Collaborations},
journal= {arXiv preprint arXiv:0810.0374},
year = {2008}
}
Comments
Invited talk given at the 3rd International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions, 8-14 June 2008, Illa da Toxa, Spain; 7 pages, 6 figures