Kondo effect driven by chirality imbalance

TL;DR

This paper introduces a new type of Kondo effect caused by chirality imbalance in relativistic fermions, which occurs even at zero density and can be studied through lattice simulations.

Contribution

It presents a novel mechanism for the Kondo effect driven by chirality imbalance, distinct from traditional density-driven effects, supported by perturbative and mean-field analyses.

Findings

Kondo effect can be induced by chirality imbalance at zero density.

The effect's temperature dependence is analyzed.

Potential for future lattice simulation verification.

Abstract

We propose a novel mechanism of the Kondo effect driven by a chirality imbalance (or chiral chemical potential) of relativistic light fermions. This effect is realized by the mixing between a right- or left-handed fermion and a heavy impurity in the chirality imbalanced matter even at zero density. This is different from the usual Kondo effect induced by finite density. We derive the Kondo effect from both a perturbative calculation and a mean-field approach. We also discuss the temperature dependence of the Kondo effect. The Kondo effect at nonzero chiral chemical potential can be tested by future lattice simulations.