2001/10/05 by Qun Wang, Dirk H. Rischke · 8 citations
Engineering · Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum Chromodynamics and Particle Interactions #Superconducting Materials and Applications #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.65.054005
published as Phys.Rev. D65 (2002) 054005 · Revtex, 8 pages, no figure
arxiv created 2001/10/05 · openalex publication_date 2002/01/22 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We consider color superconductivity with two flavors of massless quarks which form Cooper pairs with total spin zero. We solve the gap equation for the color-superconducting gap parameter to subleading order in the QCD coupling constant g at zero temperature. At this order in g, there is also a previously neglected contribution from the real part of the quark self-energy to the gap equation. Including this contribution leads to a reduction of the color-superconducting gap parameter \f0 by a factor b0'=exp [ -(\p 2+4)/8 ]≃ 0.177. On the other hand, the BCS relation Tc≃ 0.57\f0 between \f0 and the transition temperature Tc is shown to remain valid after taking into account corrections from the quark self-energy. The resulting value for Tc confirms a result obtained previously with a different method.