Crossover from a continuum study of chiral susceptibility
arXiv:0904.0059 · doi:10.1016/j.physletb.2009.03.076
Abstract
We derive a model-independent integral formula for chiral susceptibility and attempt to present a continuum model study of it within the framework of Dyson-Schwinger Equations. An appropriate regularization is implemented to remove the temperature-independent quadratic divergence inherent in this quantity. While it demonstrates a second-order phase transition characteristic in the chiral limit, the result obtained supports a crossover at physical current quark masses, which is in good agreement with recent lattice studies.
15 pages, 2 figures, revtex4