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The phase diagram of dense QCD at nonvanishing temperatures and large quarkchemical potentials is studied with Dyson-Schwinger equations for 2+1 quarkflavors, focusing on color-superconducting phases with 2SC and CFL-likepairing. The truncation scheme of our previous investigations is extended toinclude the dressing of gluons with selfconsistently determined quarks, i.e.,taking into account the dynamical masses and superconducting gaps of the quarksin the gluon polarization. As a consequence the gluon screening is reduced,leading to an enhancement of the critical temperatures of thecolor-superconducting phases by about a factor of 2 as compared to the casewhere the gluons are dressed with bare quarks. We also calculate the Debye andMeissner masses of the gluons and show that they are consistent withweak-coupling results.

Dyson-Schwinger Approach to Color-Superconductivity: Effects of Selfconsistent Gluon Dressing