Lorentz invariant phenomenology of quantum gravity: Main ideas behind the model

TL;DR

This paper proposes a Lorentz invariant phenomenological model of quantum gravity that incorporates a covariant, granular spacetime structure with curvature-matter couplings, challenging the common assumption of Lorentz violation.

Contribution

It introduces a fully covariant model of quantum gravity with Lorentz invariant spacetime granularity and specific curvature-matter interactions.

Findings

Model is fully covariant and Lorentz invariant.

Predicts observable effects from spacetime granularity.

Provides a framework for experimental tests of quantum gravity.

Abstract

In the past decade the phenomenology of quantum gravity has been dominated by the search of violations of Lorentz invariance. However, there are very serious arguments that led us to assume that this invariance is a symmetry in Nature. This motivated us to construct a phenomenological model describing how a Lorentz invariant granular structure of spacetime could become manifest. The proposal is fully covariant, it involves non-trivial couplings of curvature to matter fields and leads to a well defined phenomenology.