Tidal heating in a Riemann-Cartan spacetime
Abstract
We consider possible perturbations of the black hole event horizon induced by matter with spin, extending the derivation of the Hawking-Hartle formula (tidal heating) in the presence of torsion. When specialised to theories with a non-vanishing (pseudo-)traceless component of the (con)torsion tensor, we remarkably find that the tidal heating phenomenon gets modified by additional torsion-dependent terms, in agreement with previous investigations based on Jacobson's spacetime thermodynamics approach. These results lead to relevant phenomenological and theoretical consequences: modifications in the Hawking-Hartle term change the Bondi mass associated with the gravitational radiation observed at infinity, and modify the Hawking radiation spectrum of evaporating black holes.
Keywords
Cite
@article{arxiv.2208.14262,
title = {Tidal heating in a Riemann-Cartan spacetime},
author = {Sudipta Hensh and Stefano Liberati and Vincenzo Vitagliano},
journal= {arXiv preprint arXiv:2208.14262},
year = {2023}
}