Stimulated Emission of Dark Matter Axion from Condensed Matter Excitations

TL;DR

This paper proposes a novel method to detect dark matter axions by leveraging stimulated emissions from condensed matter excitations, specifically magnetic vortex strings in superconductors, offering a new experimental approach.

Contribution

It introduces a mechanism for detecting dark matter axions via stimulated emission from condensed matter excitations, with a concrete example involving vortex strings in superconductors.

Findings

Stimulated emission of axions from vortex strings is theoretically possible.

Magnetic vortex strings in superconductors can serve as a detection medium.

Potential experimental signatures for axion detection are identified.

Abstract

We discuss a possible principle for detecting dark matter axions in galactic halos. If axions constitute a condensate in the Milky Way, stimulated emissions of the axions from a type of excitation in condensed matter can be detectable. We provide general mechanism for the dark matter emission, and, as a concrete example, an emission of dark matter axions from magnetic vortex strings in a type II superconductor are investigated along with possible experimental signatures.