Status of Lattice Studies of the QCD Phase Diagram
Abstract
Determining the QCD phase diagram is a pressing task in view of its relevance for nuclear and astro-particle physics programmes. We review the current status of lattice calculations of the phase diagram in the (T,\mu_B)-plane for baryon chemical potentials \mu_B < 500 MeV. At \mu_B=0, simulations of staggered fermion actions predict the quark hadron transition to be a crossover in the continuum limit. As a baryon chemical potential is turned on, there is mounting evidence on coarse lattices for the crossover to weaken, rather than turning into a true phase transition at a critical point, as predicted by earlier simulations.
Keywords
Cite
@article{arxiv.0808.0672,
title = {Status of Lattice Studies of the QCD Phase Diagram},
author = {Owe Philipsen},
journal= {arXiv preprint arXiv:0808.0672},
year = {2009}
}
Comments
8 pages, Invited talk at YITP International Symposium on Fundamental Problems in Hot/Dense QCD, Kyoto, Japan, 3-6 Mar 2008