Sensitivity of Resonant Axion Haloscopes to Quantum Electromagnetodynamics

TL;DR

This paper explores how resonant axion haloscopes can be sensitive to extended axion-photon interactions involving magnetic monopoles, potentially opening new avenues for axion detection and magnetic monopole discovery.

Contribution

It introduces a method to detect additional axion couplings to electromagnetic fields, expanding the search parameter space beyond the conventional axion-photon coupling.

Findings

Sensitivity to new axion couplings $g_{aAB}$ and $g_{aBB}$ demonstrated

Resonant haloscopes can be adapted to probe extended axion-electrodynamics

Potential for indirect detection of magnetic monopoles through axion experiments

Abstract

Recently interactions between putative axions and magnetic monopoles have been revisited by two of us [arXiv:2205.02605 [hep-ph]]. It has been shown that significant modifications to conventional axion electrodynamics arise due to these interactions, so that the axion-photon coupling parameter space is expanded from one parameter $g_{a\gamma\gamma}$ to three $(g_{a\gamma\gamma},g_{aAB},g_{aBB})$. We implement Poynting theorem to determine how to exhibit sensitivity to $g_{aAB}$ and $g_{aBB}$ using resonant haloscopes, allowing new techniques to search for axions and a possible indirect way to determine if magnetically charged matter exists.