Black hole event horizons are cosmologically coupled
It is shown that an exactly static and spherically symmetric black hole event horizon cannot be embedded in a time-dependent geometry. Forcing it to do so results in a naked null singularity at the would-be horizon. Therefore, since the Universe is expanding, black holes must couple to the cosmological expansion, which was suggested as the growth mechanism for supermassive black holes in galaxies, with implications for the dark energy puzzle.
Authors
- Valerio Faraoni (ORCID: https://orcid.org/0000-0002-2601-1870)
- Massimiliano Rinaldi (ORCID: https://orcid.org/0000-0003-0325-3911)
Institutions
- Bishop's University (CA)
- University of Trento (IT)
- Istituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics And Applications (IT)
Publication Details
- Journal
- Physical review. D/Physical review. D.
- Published
- 2024-09-23
- DOI
- https://doi.org/10.1103/physrevd.110.063553
- Citations
- 16
- Primary Topic
- Cosmology and Gravitation Theories
- Type
- article
- Field-Weighted Citation Impact
- 5.30
Funders
- Natural Sciences and Engineering Research Council of Canada