Shedding Light on the Symmetries of Dark Matter

TL;DR

This paper explores potential symmetries underlying dark matter's stability and relic density, proposing methods to detect these symmetries via light propagation and polarization studies during dark matter transit.

Contribution

It introduces a framework linking dark matter symmetries to observable effects on light propagation and polarization, suggesting new avenues for dark matter detection.

Findings

Symmetries may explain dark matter stability and relic density.

Light polarization can reveal dark matter symmetries.

Proposed observational strategies for symmetry detection.

Abstract

I consider symmetries which could explain observed properties of dark matter, namely, its stability on Gyr time scales or its relic density and discuss how such symmetries can be discovered through the study of the propagation and polarization of light in its transit through dark matter.