A light plasmon mode in the color-flavor-locking phase
arXiv:hep-ph/0611141
Abstract
We calculate the spectral densities of electric and magnetic gluons at zero temperature in color-superconducting quark matter in the color-flavor-locking (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.
4 pages, 4 figures, Chosen as one of the best posters in the Conference "Quark Matter 2005", 4th - 9th August 2005, Budapest/Hungary