Dilaton as a Dark Matter Candidate and its Detection

TL;DR

This paper proposes an experimental method to detect relic dilaton dark matter using electromagnetic resonant cavities, calculating its density, mass range, and detection power, and comparing it with axion detection techniques.

Contribution

It introduces a novel detection scheme for dilaton dark matter via dilaton-photon conversion in resonant cavities, providing estimates of relic density and detection feasibility.

Findings

Dilaton can be a viable dark matter candidate within certain mass ranges.

The proposed detection method could distinguish dilaton signals from axion signals.

Estimated detection power suggests potential for experimental verification.

Abstract

Assuming that the dilaton is the dark matter of the universe, we propose an experiment to detect the relic dilaton using the electromagnetic resonant cavity, based on the dilaton-photon conversion in strong electromagnetic background. We calculate the density of the relic dilaton, and estimate the dilaton mass for which the dilaton becomes the dark matter of the universe. With this we calculate the dilaton detection power in the resonant cavity, and compare it with the axion detection power in similar resonant cavity experiment.