Chiral separation effect catalyzed by heavy impurities

TL;DR

This paper demonstrates that heavy impurities inducing the Kondo effect significantly enhance the chiral separation effect in quark matter, especially in dynamical conditions, affecting transport phenomena under magnetic fields.

Contribution

It introduces a simple effective model showing how the Kondo effect catalyzes the chiral separation effect in quark matter, with quantitative enhancement in dynamical limits.

Findings

Kondo effect catalyzes the CSE in static and dynamical limits.

CSE in dynamical limit can be enhanced by approximately three times.

Heavy impurities influence light quark transport phenomena under magnetic fields.

Abstract

We investigate the influence of Kondo effect, namely, the nonperturbative effect induced by heavy impurities, on the chiral separation effect (CSE) in quark matter. We employ a simple effective model incorporating the Kondo condensate made of a light quark and a heavy quark, and compute the response function of axial current to the magnetic field in static limit and dynamical limit. As a result, we find that the Kondo effect catalyzes the CSE in both the limits, and particularly the CSE in dynamical limit can be enhanced by a factor of approximately three. Our findings clearly show that the presence of heavy impurities in quark matter can play an important role in the transport phenomena of light quarks induced by a magnetic field.