Chiral Magnetic and Vortical Effects in Higher Dimensions at Weak Coupling

TL;DR

This paper investigates the theoretical aspects of chiral magnetic and vortical effects in higher even-dimensional spacetimes, computing related response functions at weak coupling and clarifying their connection to anomalous transport coefficients.

Contribution

It extends the analysis of chiral anomaly-induced effects to all even dimensions and provides a detailed diagrammatic computation of P-odd response functions.

Findings

Derived P-odd retarded response functions in higher dimensions

Clarified the Kubo formula for anomalous transport coefficients

Discussed implications for topological phase classification

Abstract

Chiral Magnetic Effect and Chiral Vortical Effect are parity odd transport phenomena originating from chiral anomaly, and have generalizations to all even dimensional space-time higher than four dimensions. We attempt to compute the associated P-odd retarded response functions in the weak coupling limit of chiral fermion theory in all even dimensions, using the diagrammatic technique of real-time perturbation theory. We also clarify the necessary Kubo formula relating the computed P-odd retarded correlation functions and the associated anomalous transport coefficients. We speculate on the 8-fold classification of topological phases.