A Lorentz Invariant Phenomenological Model of Quantum Gravity

TL;DR

This paper proposes a Lorentz-invariant phenomenological model of quantum gravity that incorporates space-time granularity without breaking Lorentz symmetry, providing testable predictions in the Newtonian limit.

Contribution

It introduces a novel quantum gravity model with Lorentz invariance and curvature-matter couplings, along with initial phenomenological results in linearized gravity.

Findings

Model respects Lorentz symmetry despite granular space-time

Derives phenomenological predictions in Newtonian limit

Provides a framework for experimental comparison

Abstract

We consider a model of Quantum Gravity phenomenology, based on the idea that space-time may have some unknown granular structure that respects the Lorentz symmetry. The proposal involves non-trivial couplings of curvature to matter fields and leads to a well defined phenomenology. In this manuscript, a brief description of the model is presented together with some results obtained using linearized gravity and the Newtonian limit, which could be useful when comparing with real experiments.