Dark Medium Modified Dispersion Relations

TL;DR

This paper proposes that a dark medium in the universe alters particle dispersion relations, and explores how these modifications could impact physics without requiring changes to Einstein's relativity.

Contribution

It introduces a generic form for modified dispersion relations caused by a dark medium and provides explicit models demonstrating these effects.

Findings

Dark medium effects are smaller than SN1987a bounds

Explicit models of dark medium modify neutrino dispersion relations

Dark medium effects could influence physics before modifying relativity

Abstract

We suggest that the dark side of the universe builds a dark medium modifying the Standard Model particle dispersion relations. We introduce the generic form for the modified dispersion relations and provide explicit models of the dark medium. We use the derived neutrino dispersion relations to show that the size of the corrections are smaller than the SN1987a bounds. We argue that before invoking modifications of Einstein's theory of relativity one should investigate the dark medium effects.