Gravity in quantum spacetime

TL;DR

This paper explores the implications of quantum-spacetime models on gravitational phenomena, revealing potential effects on gravitational collapse and long-distance gravity, through semi-heuristic analysis rather than full quantum gravity theories.

Contribution

It introduces semi-heuristic methods to analyze quantum-spacetime effects on gravity, offering new insights beyond traditional particle-physics-like studies.

Findings

Quantum-spacetime descriptions impact gravitational collapse scenarios.

Long-distance gravity behavior may be altered by quantum effects.

Semi-heuristic analysis provides valuable insights into quantum gravity implications.

Abstract

The literature on quantum-gravity-inspired scenarios for the quantization of spacetime has so far focused on particle-physics-like studies. This is partly justified by the present limitations of our understanding of quantum-gravity theories, but we here argue that valuable insight can be gained through semi-heuristic analyses of the implications for gravitational phenomena of some results obtained in the quantum-spacetime literature. In particular, we show that the types of description of particle propagation that emerged in certain quantum-spacetime frameworks have striking implications for gravitational collapse and for the behaviour of gravity at large distances.