Massive photon propagator in the presence of axionic fluctuations

TL;DR

This paper explores how axionic fluctuations influence the behavior of massive photon propagators in semimetals, revealing modifications to electromagnetic properties like the Yukawa potential and penetration length.

Contribution

It introduces a theoretical framework for massive photons interacting with axions in semimetals, including one-loop corrections to electromagnetic potentials.

Findings

Corrections to Yukawa potential due to axions

Modified London penetration length in axionic superconductor

Quantitative analysis of photon propagator alterations

Abstract

The theory of massive photons in the presence of axions is studied as the effective theory describing the electromagnetic response of semimetals when a particular quartic fermionic pairing perturbation triggers the formation of charged chiral condensates, giving rise to an axionic superconductor. We investigate corrections to the Yukawa-like potential mediated by massive photons due to axion excitations up to one-loop order and compute the modifications of the London penetration length.