Dyson-Schwinger approach to color superconductivity at finite temperature and density |
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Authors: | D. Müller M. Buballa J. Wambach |
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Affiliation: | 1. Institut für Kernphysik (Theoriezentrum), Technische Universit?t Darmstadt, Darmstadt, Germany
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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 500-600MeV. 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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