Spatial structure of quark Cooper pairs in a color superconductor

Abstract

Spatial structure of Cooper pairs with quantum numbers color 3^*, I=J=L=S=0 in ud 2 flavor quark matter is studied by solving the gap equation and calculating the coherence length in full momentum range without the weak coupling approximation. Although the gap at the Fermi surface and the coherence length depend on density weakly, the shape of the r-space pair wave function varies strongly with density. This result indicates that quark Cooper pairs become more bosonic at higher densities.

10 pages, 3 figures. The frequency dependence of the gap and the limitation on the type I/type II discussion are mentioned briefly. To appear in Phys. Rev. D

References in corpus (8)

• Superconductivity from perturbative one-gluon exchange in high density quark matter
• On two-color QCD with baryon chemical potential
• Gaps and Critical Temperature for Color Superconductivity
• Schwinger-Dyson Approach to Color Superconductivity in Dense QCD
• On the Perturbative Nature of Color Superconductivity
• Qualitons At High Density
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• Effective repulsion in dense quark matter from non-perturbative gluon exchange
• Bound diquarks and their Bose-Einstein condensation in strongly coupled quark matter
• BCS-BEC crossover in dense relativistic matter: Collective excitations
• Stable gapless superconductivity at strong coupling
• Diquark Bose-Einstein Condensation and Nuclear Matter
• Strongly interacting Fermi systems in 1/N expansion: From cold atoms to color superconductivity
• Magnetic Tuning of the Relativistic BCS-BEC Crossover
• Pionic BEC--BCS crossover at finite isospin chemical potential
• Structure of Strange Dwarfs with Color Superconducting Core
• Equation of State in a Strongly Interacting Relativistic System
• Diquarks in the nilpotency expansion of QCD and their role at finite chemical potential
• Bose-Einstein condensation in strong-coupling quark color superconductor near flavor SU(3) limit
• BCS vs Overhauser pairing in dense (2+1)d QCD
• Possible crossover from BCS superconductivity to Bose-Einstein condensate in quark matter