Chromomagnetic instability in two-flavor quark matter at nonzero temperature

Abstract

We calculate the effective potential of the 2SC/g2SC phases including vector condensates ($<g{A}_z^6>$ and $<g{A}_z^8>$) and study the gluonic phase and the single plane-wave Larkin-Ovchinnikov-Fulde-Ferrell state at nonzero temperature. Our analysis is performed within the framework of the gauged Nambu--Jona-Lasinio model. We compute potential curvatures with respect to the vector condensates and investigate the temperature dependence of the Meissner masses squared of gluons of color 4--7 and 8 in the neutral 2SC/g2SC phases. The phase diagram is presented in the plane of temperature and coupling strength. The unstable regions for gluons 4--7 and 8 are mapped out on the phase diagram. We find that, apart from the case of strong coupling, the 2SC/g2SC phases at low temperatures are unstable against the vector condensation until the temperature reaches tens of MeV.

10 pages, 10 figures, revisions to text, published in Phys. Rev. D

References in corpus (4)

• 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
• Gapless phases of color-superconducting matter

Cited by in corpus (8)

• Color superconductivity in dense quark matter
• Vector interaction, charge neutrality and multiple chiral critical point structures
• Number of the QCD critical points with neutral color superconductivity
• Gluonic phases, vector condensates, and exotic hadrons in dense QCD
• 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
• Complete Gluonic Phase in Two-Flavor Color Superconductivity