Dual chiral density waves in nuclear matter

TL;DR

This paper investigates inhomogeneous chiral phases in nuclear matter, revealing a new dual chiral density wave with nonzero space average that appears at low densities, using a hadronic model with parity doublet structure.

Contribution

It introduces an extended ansatz for dual chiral density waves and demonstrates the existence of a novel phase with nonvanishing space average in nuclear matter.

Findings

Discovery of a new dual chiral density wave phase.

The new phase occupies a wide low-density region.

Phase structure depends on the chiral invariant mass parameter.

Abstract

We study inhomogeneous chiral phases in nuclear matter using a hadronic model with the parity doublet structure. With an extended ansatz for the dual chiral density wave off the chiral limit, we numerically determine the phase structure. A new type of dual chiral density wave where the condensate has nonvanishing space average is confirmed and it comes to occupy a wide range of low density region as the chiral invariant mass parameter is lowered.