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Higher order corrections to Color superconducting gaps

Deog Ki Hong·Taekoon Lee·Dong-Pil Min·D. Seo·Chaejun Song
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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.

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Deog Ki Hong, Taekoon Lee, Dong-Pil Min, D. Seo, Chaejun Song. 2003-05-07. Higher order corrections to Color superconducting gaps. https://doi.org/10.1016/s0370-2693(03)00731-7

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