How the quark self-energy affects the color-superconducting gap
Qun Wang, Dirk H. Rischke
DOI 10.1103/PhysRevD.65.054005 · Physical Review D
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
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 φ0 by a factor b0′=exp[−(π2+4)/8]≃0.177. On the other hand, the BCS relation Tc≃0.57φ0 between φ0 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.
Similar papers
Gaps and critical temperature for color superconductivity
similarity 0.94Robert D. Pisarski & Dirk H. Rischke
Source status unknown — claims are unverified
Cutoff-independent regularization of four-fermion interactions for color superconductivity
similarity 0.91R. L. S. Farias et al.
Source status unknown — claims are unverified
Color superconductivity in weak coupling
similarity 0.91Robert D. Pisarski & Dirk H. Rischke
Source status unknown — claims are unverified
The Transition Temperature to the Superconducting Phase of QCD at High Baryon Density
similarity 0.91William E. Brown et al. · 1999 · arXiv:hep-ph/9912409
Source status unknown — claims are unverified
Numerical solution of the color superconductivity gap in a weak coupling constant
similarity 0.89I. Zakout et al.
Source status unknown — claims are unverified
Magnetic Field Effects in the Pseudogap Phase: A Competing Energy Gap Scenario for Precursor Superconductivity
similarity 0.87Ying-Jer Kao et al. · 2001 · arXiv:cond-mat/0103614
Source status unknown — claims are unverified