Slightly Massive Photon and Equivalence Principle

TL;DR

This paper investigates how a slightly massive photon in a Higgs model can lead to violations of the equivalence principle, imposing strict constraints on the model's parameters.

Contribution

It reveals one-loop diagrams causing equivalence principle violations in models with a slightly massive photon, highlighting new theoretical constraints.

Findings

One-loop diagrams induce equivalence principle violations.

Stringent constraints on the parameter space of the Higgs model.

Implications for the viability of models with a massive photon.

Abstract

We show that in the Higgs model leading to a slightly massive photon there are one-loop diagrams which induce equivalence principle violations. This and other considerations implicate rather stringent constraints in the parameter space of the model.