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arXiv · 1303.2693

Dyson-Schwinger approach to color superconductivity at finite temperature and density

Daniel Müller·Michael Buballa·Jochen Wambach
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Abstract

We investigate the phases of dense QCD matter at finite temperature with Dyson-Schwinger equations for the quark propagator for N_f=2+1 flavors. For the gluon propagator we take a fit to quenched lattice data and add quark-loop effects perturbatively in a hard-thermal-loop--hard-dense-loop approximation. We consider 2SC and CFL-like pairing with chiral up and down quarks and massive strange quarks and present results for the condensates and the phase diagram. We find a dominant CFL phase at chemical potentials larger than 500-600 MeV. At lower values of the chemical potential we find a 2SC phase, which also exists in a small band at higher temperatures for larger chemical potentials. With values of 20-30 MeV, the critical temperatures to the normal phase turn out to be quite small.

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Daniel Müller, Michael Buballa, Jochen Wambach. 2013-07-29. Dyson-Schwinger approach to color superconductivity at finite temperature and density. https://doi.org/10.1140/epja/i2013-13096-5

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