Superconducting K strings in high density QCD

Abstract

Recently it has been argued that the ground state of high density QCD is likely be a combination of the CFL-phase along with condensation of the K^0 field. This state spontaneously breaks a global U(1)_Y symmetry, therefore one would expect the formation of U(1)_Y global strings. We discuss the core structure of these strings and demonstrate that under some conditions the global U(1)_Y symmetry may not be restored inside the string, in contrast with the standard expectations. Instead, K^+ condensation occurs inside the core of the string if a relevant parameter \cosθ_K = \mkzero^2/μ_eff^2 is larger than some critical value θ_K > θ_crit. If this phenomenon happens, the U(1)_Y strings become superconducting and may considerably influence the magnetic properties of dense quark matter, in particular in neutron stars.

10 pages, 2 Postscript figures. Discussion improved and acknowledgement added

References in corpus (9)

• High Density Quark Matter under Stress
• Novel phases and transitions in Color Flavor Locked matter
• Domain walls of high-density QCD
• Global Strings in High Density QCD
• Charged and superconducting vortices in dense quark matter
• Instanton interactions in dense-matter QCD
• Thermal Stabilisation of Superconducting Sigma Strings and their Drum Vortons
• Charged kaon condensation in high density quark matter
• Classical stability of U(1)_A domain walls in dense matter QCD

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• Vortex Rings in two Component Bose-Einstein Condensates
• Drum vortons in high density QCD
• Stability and the equation of state for kinky vortons
• Anomaly inflow on QCD axial domain-walls and vortices
• Vortons in the SO(5) model of high temperature superconductivity
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