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.

Revtex, 5 pages, 4 figures, two figures and clarifications added, to appear in PRD (Rapid Communications)

References in corpus (3)

• Two lectures on color superconductivity
• Chromomagnetic instability in dense quark matter
• Novel Phases at High Density and their Roles in the Structure and Evolution of Neutron Stars

Cited by in corpus (18)

• Color superconductivity in dense quark matter
• The Crystallography of Three-Flavor Quark Matter
• The rigidity of crystalline color superconducting quark matter
• Stability conditions and Fermi surface topologies in a superconductor
• Manifestation of Instabilities in Nambu-Jona-Lasinio type models
• Gluonic phases, vector condensates, and exotic hadrons in dense QCD
• Chromomagnetic instability in two-flavor quark matter at nonzero temperature
• On the ground state of gapless two flavor color superconductors
• Higgs instability in gapless superfluidity/superconductivity
• Meissner screening mass in two-flavor quark matter at nonzero temperature
• Dynamical stabilization of runaway potentials at finite density
• Superfluid and Pseudo-Goldstone Modes in Three Flavor Crystalline Color Superconductivity
• Is gluonic color-spin locked phase stable?
• Meissner screening masses in gluonic phase
• Phase diagram of two-flavor quark matter: Gluonic phase at nonzero temperature
• Dynamical stabilization of runaway potentials and landscape of vacua at finite density
• Inhomogeneous phase of a Gluon Plasma at finite temperature and density
• Instabilities in two flavor quark matter