Quasi-magnetism of sterile dark matter with photonic portal

TL;DR

This paper proposes a model where sterile dark matter particles interact weakly with electromagnetic fields via a photonic portal, leading to a phenomenon called quasi-magnetism, which could influence cosmic and laboratory magnetic phenomena.

Contribution

It introduces a novel sterile dark matter model with a photonic portal enabling weak electromagnetic interactions, and predicts quasi-magnetism in sterino-based dark matter.

Findings

Sterino dark matter interacts with magnetic fields via a photonic portal.

A spontaneous renormalization of electric charge occurs in the model.

Sterino dark matter exhibits quasi-magnetic behavior.

Abstract

We develop farther a simple model of cold dark matter consisting of sterile spin-1/2 fermions (sterinos), whose mass is generated by a nonzero vacuum expectation value of a field of sterile scalars (sterons). In this model, the sterile world of sterinos and sterons is conjectured to communicate with the familiar Standard Model world not only through gravity, but also through a photonic portal provided by a very weak effective interaction of the electromagnetic field with sterino and steron fields. Then, an extra, finite renormalization leading from the primary bare electric charge to a new bare electric charge appears spontaneously. Due to the photonic portal, the cold dark matter consisting of sterinos displays a phenomenon of quasi-magnetism, what means that it can interact effectively with cosmic (and laboratory) magnetic fields.