Work

Black hole solutions in quantum phenomenological gravitational dynamics

Year: 2025

Type: article

Abstract: We investigate black hole solutions in a modified gravity theory inspired by a phenomenological approach to quantum gravity based on spacetime thermodynamics developed by Alonso-Serrano and Li\ifmmode \check{s}\else \v{s}\fi{}ka. The field equations are traceless, similar to unimodular gravity, and include quadratic curvature corrections. We find that static, spherically symmetric, vacuum spacetimes in this theory split into two branches. The first branch is indistinguishable from corresponding solutions in unimodular gravity and describes Schwarzschild--(anti) de Sitter black holes. The second branch instead describes horizonless solutions and is characterized by large values of the spatial curvature. We analyze the dynamics of first-order metric perturbations on both branches, showing that there are no deviations from unimodular gravity at this level.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/4vd6-dml9

Authors: Ana Alonso-Serrano, Marco de Cesare, Manuel Del Piano

Institutions: Humboldt-Universität zu Berlin, Max Planck Institute for Gravitational Physics, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Scuola Superiore Meridionale, University of Southern Denmark

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green