Gluon self-energy in the color-flavor-locked phase
High Energy Physics - Phenomenology
2009-11-11 v2 Superconductivity
Nuclear Theory
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.
Cite
@article{arxiv.hep-ph/0602082,
title = {Gluon self-energy in the color-flavor-locked phase},
author = {H. Malekzadeh and Dirk H. Rischke},
journal= {arXiv preprint arXiv:hep-ph/0602082},
year = {2009}
}
Comments
12 pages, 4 figures, more details and references added, version to appear in Phys. Rev. D