The role of quark mass in cold and dense pQCD and quark stars
arXiv:hep-ph/0509304 · doi:10.1016/j.nuclphysa.2006.06.143
Abstract
For almost twenty years the effects of a nonzero strange quark mass on the equation of state of cold and dense QCD were considered to be negligible, thereby yielding only minor corrections to the mass-radius diagram of compact stars. By computing the thermodynamic potential to first order in α_s, and including the effects of the renormalization group running of the coupling and strange quark mass, we show that corrections can be of the order of 25%, and dramatically affect the structure of compact stars.
4 pages, 2 figures, contribution to QM2005 proceedings