Phase diagram of QCD with two degenerate staggered quarks

TL;DR

This paper investigates the phase diagram of QCD with two degenerate staggered quarks at finite temperature and chemical potential, using analytic continuation to understand the critical line's shape and curvature.

Contribution

It provides new preliminary results on the critical line of QCD with two flavors at nonzero chemical potential, highlighting deviations from quadratic dependence and estimating the line's curvature.

Findings

Deviations from quadratic dependence on chemical potential.

Estimated curvature of the critical line for quark and isospin chemical potentials.

Comments on the shape of the critical line at real chemical potential.

Abstract

We present preliminary results about the critical line of QCD with two degenerate staggered quarks at nonzero temperature and chemical potential, obtained by the method of analytic continuation. As in our previous studies with different numbers of colors and flavors, we find deviations from a simple quadratic dependence on the chemical potential. We comment on the shape of the critical line at real chemical potential and give an estimate of the curvature of the critical line, both for quark chemical potential and isospin chemical potential.