Meson current in the CFL phase

Abstract

We study the stability of the color-flavor locked (CFL) phase of dense quark matter with regard to the formation of a non-zero Goldstone boson current. We show that an instability appears in the vicinity of the point ${\mu }_s=\Delta$ which marks the appearance of gapless fermion modes in the CFL phase. Here, ${\mu }_s=m_s^2/(2\mu )$ is the shift in chemical potential due to the strange quark mass and $\Delta$ is the gap in the chiral limit. We show that in the Goldstone boson current phase all components of the magnetic screening mass are real. In this work we do not take into account homogeneous kaon condensation. We study the effects of an instanton induced interaction of the magnitude required to suppress kaon condensation.

15 pages, 5 figures, v2: minor improvements, results unchanged

References in corpus (13)

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• Photons in gapless color-flavor-locked quark matter
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• Testing the Ginzburg-Landau approximation for three-flavor crystalline color superconductivity
• Spontaneous current generation in the gapless 2SC phase
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Cited by in corpus (22)

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• Magnetic Phases in Three-Flavor Color Superconductivity
• The rigidity of crystalline color superconducting quark matter
• Chromomagnetic Instability and Induced Magnetic Field in Neutral Two-Flavor Color Superconductivity
• Spontaneous Superfluid Current Generation in CFL at Nonzero Strange Quark Mass
• Axion electrodynamics and nonrelativistic photons in nuclear and quark matter
• Critical temperature for kaon condensation in color-flavor locked quark matter
• Goldstone boson currents in a kaon condensed CFL phase
• Dressed Polyakov loop and flavor dependent phase transitions
• Inhomogeneity driven by Higgs instability in gapless superconductor
• Polarized fermions in the unitarity limit
• A diagrammatic derivation of the meson effective masses in the neutral color-flavor-locked phase of Quantum Chromodynamics
• Thermal Relaxation and Cooling of Quark Stars with a Strangelet Crust
• BCS-BEC Crossover and Stability in a Nambu-Jona-Lasinio Model with Diquark-Diquark Repulsion
• Superfluid and Pseudo-Goldstone Modes in Three Flavor Crystalline Color Superconductivity
• Dipole symmetries from the topology of the phase space and the constraints on the low-energy spectrum
• Color superconductivity in ultra-dense quark matter
• Chromomagnetic stability of the CFL phase with a meson current
• Unconventional Color Superconductor