Chiral Kinetic Theory

TL;DR

This paper derives a kinetic equation for chiral massless particles, highlighting how Berry monopoles in momentum space lead to chiral magnetic and vortical effects in a classical regime.

Contribution

It introduces a non-equilibrium kinetic equation for chiral particles, linking Berry monopoles to observable chiral effects, a novel theoretical development.

Findings

Berry monopoles cause chiral magnetic effects

Derived kinetic equation describes chiral particle dynamics

Links topological features to physical phenomena

Abstract

We derive the non-equilibrium kinetic equation describing the motion of chiral massless particles in the regime where it can be considered classically. We show that the Berry monopole which appears at the origin of the momentum space due to level crossing is responsible for the chiral magnetic and vortical effects.