Chiral vortical catalysis

TL;DR

This paper investigates how vorticity influences chiral fermions, revealing that rotation enhances the effective strong interaction coupling, leading to a phenomenon called chiral vortical catalysis, which raises the pseudo critical temperature.

Contribution

It introduces the concept of chiral vortical catalysis, showing how rotation increases the effective coupling and affects chiral symmetry restoration in QCD-like models.

Findings

Rotation increases the effective coupling in the NJL model.

Pseudo critical temperature rises with increasing rotation.

The temperature rise saturates, possibly due to model cutoff effects.

Abstract

Gluon interaction introduces remarkable corrections to the magnetic polarization effects on the chiral fermions, which is known as the inverse magnetic catalysis. It is a natural speculation that the vorticity, which has many similar properties as magnetic field, would bring non-negligible contribution to the chiral rotational suppression. Using the intuitive semi-classical background field method we studied the rotation dependence of the effective strong interaction coupling. Contrary to the magnetic field case the rotation increases the effective coupling which leads to slowing down the condensate melting procedure with temperature. This could be named as the chiral vortical catalysis or inverse rotation suppression. Imposing such dependence to the coupling in the NJL model, we numerically checked this analysis qualitatively. The pseudo critical temperature is shown to rise with the rotation and approach saturation eventually which may be induced by the model cutoff.