Photonic portal to hidden sector and a parity-preserving option

TL;DR

This paper explores models of a photonic portal to a hidden sector that preserve parity, proposing two options with one being more satisfactory due to relativistic covariance.

Contribution

It introduces two new parity-preserving models for the photonic portal to a hidden sector, addressing issues of relativistic covariance.

Findings

First model does not display full relativistic covariance.

Second model successfully preserves parity and relativistic covariance.

Abstract

In the case of previously proposed idea of photonic portal to hidden sector, the parity in this sector may be violated. We discuss here two new options within our model, where the parity is preserved. The first of them is not satisfactory, as not diplaying a full relativistic covariance. The second seems to be satisfactory.