Symmetry breaking patterns and collective modes of spin-one color superconductors

TL;DR

This paper reexamines the phase diagram of spin-one color superconductors, highlighting previously overlooked noninert states and classifying their collective Nambu-Goldstone modes, which are crucial for understanding transport in dense stellar matter.

Contribution

It provides a revised phase diagram including noninert states and offers a detailed classification of Nambu-Goldstone modes in spin-one color superconductors.

Findings

Identification of noninert states in the phase diagram.

Classification of Nambu-Goldstone modes.

Implications for transport properties in neutron stars.

Abstract

Spin-one color superconductor is a viable candidate phase of dense matter in the interiors of compact stars. Its low-energy excitations will influence the transport properties of such matter and thus have impact on late-stage evolution of neutron stars. It also provides a good example of spontaneous symmetry breaking with rich breaking patterns. In this contribution, we reanalyze the phase diagram of a spin-one color superconductor and point out that a part of it is occupied by noninert states, which have been neglected in literature so far. We classify the collective Nambu--Goldstone modes, which are essential to the transport phenomena.