Superfluid and Pseudo-Goldstone Modes in Three Flavor Crystalline Color Superconductivity

TL;DR

This paper investigates the bosonic excitations in three-flavor crystalline color superconductivity, calculating masses and decay constants of Nambu-Goldstone bosons, revealing differences from other known phases like the Color-Flavor-Locking phase.

Contribution

It provides the first detailed calculation of pseudo-Goldstone boson properties in cubic three-flavor crystalline LOFF phases of QCD.

Findings

Masses of eight pseudo NGBs calculated

Decay constants of NGBs determined

Meson condensation phases are unlikely in this scenario

Abstract

We study the bosonic excitations in the favorite cubic three flavor crystalline LOFF phases of QCD. We calculate in the Ginzburg-Landau approximation the masses of the eight pseudo Nambu-Goldstone Bosons (NGB) present in the low energy theory. We also compute the decay constants of the massless NGB Goldstones associated to superfluidity as well as those of the eight pseudo NGB. Differently from the corresponding situation in the Color-Flavor-Locking phase, we find that meson condensation phases are not expected in the present scenario.