Gluon self-energy in the color-flavor-locked phase

Abstract

We calculate the self-energies and the spectral densities of longitudinal and transverse gluons at zero temperature in color-superconducting quark matter in the color-flavor-locked (CFL) phase. We find a collective excitation, a plasmon, at energies smaller than two times the gap parameter and momenta smaller than about eight times the gap. The dispersion relation of this mode exhibits a minimum at some nonzero value of momentum, indicating a van Hove singularity.

12 pages, 4 figures, more details and references added, version to appear in Phys. Rev. D

References in corpus (14)

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Cited by in corpus (10)

• Color superconductivity in dense quark matter
• Soft interactions in cold quark matter
• Equation of State of Cold Quark Matter to $O({\alpha }_s^3\ln {\alpha }_s)$
• Dense QCD in a Finite Volume
• Spectral Continuity in Dense QCD
• Degenerate fermionic matter at N${}^3$LO: Quantum Electrodynamics
• Photon Self-Energy and Electric Susceptibility in a Magnetized Three-flavor Color Superconductor
• Some aspects of color superconductivity: an introduction
• Topological Susceptibility in the Superconductive Phases of Quantum Chromodynamics: a Dyson-Schwinger Perspective
• Gluon self-energy effect on CFL gap equation