Collective excitations, instabilities, and ground state in dense quark matter
Abstract
We study the spectrum of light plasmons in the (gapped and gapless) two-flavor color superconducting phases and its connection with the chromomagnetic instabilities and the structure of the ground state. It is revealed that the chromomagnetic instabilities in the 4-7th and 8th gluonic channels correspond to two very different plasmon spectra. These spectra lead us to the unequivocal conclusion about the existence of gluonic condensates (some of which can be spatially inhomogeneous) in the ground state. We also argue that spatially inhomogeneous gluonic condensates should exist in the three-flavor quark matter with the values of the mass of strange quark corresponding to the gapless color-flavor locked state.
Keywords
Cite
@article{arxiv.hep-ph/0602251,
title = {Collective excitations, instabilities, and ground state in dense quark matter},
author = {E. V. Gorbar and Michio Hashimoto and V. A. Miransky and I. A. Shovkovy},
journal= {arXiv preprint arXiv:hep-ph/0602251},
year = {2007}
}
Comments
Revtex, 5 pages, 4 figures, two figures and clarifications added, to appear in PRD (Rapid Communications)