Aspects of Color Superconductivity

TL;DR

This paper explores various aspects of color superconductivity in high-density quark matter, including gap calculations, phase transitions, meson masses, and implications for neutrino interactions, highlighting the theoretical understanding of the CFL phase.

Contribution

It provides new calculations of the Cooper pair gap, critical points, and meson masses in the color-flavor locking phase, and offers a bosonization approach linking high-density and low-density phases.

Findings

Calculated the Cooper pair gap and critical points at high density.

Identified the CFL phase as a color-flavor locking state.

Analyzed neutrino interactions within the CFL superconductor.

Abstract

I discuss some aspects of recent developments in color superconductivity in high density quark matter. I calculate the Cooper pair gap and the critical points at high density, where magnetic gluons are not screened. The ground state of high density QCD with three light flavors is shown to be a color-flavor locking state, which can be mapped into the low-density hadronic phase. The meson mass at the CFL superconductor is also calculated. The CFL color superconductor is bosonized, where the Fermi sea is identified as a $Q$-matter and the gapped quarks as topological excitations, called superqualitons, of mesons. Finally, as an application of color supercoductivity, I discuss the neutrino interactions in the CFL color superconductor.