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

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

2006-02-09

arxiv.org/abs/hep-ph/0602082v2

Phys.Rev. D73 (2006) 114006

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1103/PhysRevD.73.114006

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.

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