A model with cosmological Bell inequalities

TL;DR

This paper explores the theoretical possibility of detecting quantum entanglement effects in the early universe through cosmological observables that violate Bell's inequalities, using an inflationary model as proof of concept.

Contribution

It introduces a novel inflationary model demonstrating how cosmological observables could violate Bell's inequalities, linking quantum mechanics to cosmic scale features.

Findings

Proposes a model where Bell inequality violations are possible in cosmological observations

Suggests that quantum effects in the early universe could be inferred from such violations

Provides a theoretical framework connecting quantum mechanics and cosmology

Abstract

We discuss the possibility of devising cosmological observables which violate Bell's inequalities. Such observables could be used to argue that cosmic scale features were produced by quantum mechanical effects in the very early universe. As a proof of principle, we propose a somewhat elaborate inflationary model where a Bell inequality violating observable can be constructed.