Gravity from Discrete Interactions, a laboratory of ideas for field theory

TL;DR

This paper explores a discrete interaction approach to gravity, proposing a semi-quantum model that can naturally address phenomena like cosmic acceleration, dark matter, and dark energy without exotic sources.

Contribution

It introduces a simple semi-quantum discrete interaction model of gravity that connects with key cosmological issues within a framework compatible with General Relativity.

Findings

Discrete interactions can produce repulsive gravity effects.

The model naturally relates to inflation, dark matter, and dark energy.

It offers a new perspective on field interactions and quantum-classical transitions.

Abstract

The observed accelerated expansion of the universe is an indication that somehow, in some conditions, gravity may become a repulsive interaction. The very concept of discrete interactions, compatible with General Relativity as an effective theory of averaged fields, can handle this and other pressing problems without the need of searching for ad hoc exotic sources. Semi-quantum models of discrete interactions based on quantum exchanges between point-like masses are a rich laboratory for enlightening field interactions and classical-to-quantum transitions in field theory. A very simple version is presented for exhibiting how naturally it makes contact with inflation, dark matter and dark energy issues.