Higher order corrections to Color superconducting gaps
arXiv:hep-ph/0303181 · doi:10.1016/S0370-2693(03)00731-7
Abstract
We find a (nonlocal) gauge where the wavefunction renormalization constant does not get any corrections for all momenta in the hard-dense loop approximation. In this gauge, we solve the Schwinger-Dyson equations for the diquark condensate in dense QCD to calculate the Cooper pair gap. We determine not only the exponent but also the prefactor of the gap in a gauge independent way. We find that the higher order corrections increase the gap only by about 1.6 times to the leading order gap at Coulomb gauge.
9 pages, 2 figures, RevTeX, Minor modifications
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