Perspectives on Quantum Gravity Phenomenology

TL;DR

This paper reviews the challenges and limitations of current quantum gravity phenomenology approaches, especially those involving Lorentz invariance violation, and explores alternative research directions.

Contribution

It provides a critical analysis of existing methods and suggests new perspectives for phenomenological investigations in quantum gravity.

Findings

Lorentz invariance violation approaches face strong experimental bounds

Theoretical challenges hinder current quantum gravity phenomenology

Alternative conceptual frameworks are considered for future research

Abstract

The idea that quantum gravity manifestations would be associated with a violation of Lorentz invariance is very strongly bounded and faces serious theoretical challenges. Other related ideas seem to be drowning in interpretational quagmires. This leads us to consider alternative lines of thought for such phenomenological search. We discuss the underlying viewpoints and briefly mention their possible connections with other current theoretical ideas.