Quantum Gravity Fluctuations in the Timelike Raychaudhuri Equation
General Relativity and Quantum Cosmology
2023-05-29 v2 High Energy Physics - Theory
Abstract
We consider a timelike geodesic congruence in the presence of perturbative quantum fluctuations of the spacetime metric. We calculate the change in the volume of a bundle of geodesics due to such fluctuations and thereby obtain a quantum-gravitationally modified timelike Raychaudhuri equation. Quantum gravity generically increases the convergence of congruences and the production of caustics.
Cite
@article{arxiv.2212.14010,
title = {Quantum Gravity Fluctuations in the Timelike Raychaudhuri Equation},
author = {Sang-Eon Bak and Maulik Parikh and Sudipta Sarkar and Francesco Setti},
journal= {arXiv preprint arXiv:2212.14010},
year = {2023}
}
Comments
12 pages, 2 figures; v2. published version