Quantum censors: Backreaction builds horizons
Cosmic censorship posits that spacetime singularities remain concealed behind event horizons, preserving the determinism of General Relativity. While quantum gravity is expected to resolve singularities, we argue that cosmic censorship remains necessary whenever spacetime has a reliable semi-classical description. By using holography to construct exact solutions to semi-classical gravity, we show backreaction of quantum matter generates horizons — quantum censors — to thwart potential violations of censorship. Along with a quantum Penrose inequality, this evidence suggests that cosmic censorship is robust, even nonperturbatively, in semi-classical gravity.
Authors
- Robie A. Hennigar (ORCID: https://orcid.org/0000-0002-9531-6440)
- Juan F. Pedraza (ORCID: https://orcid.org/0000-0002-1426-642X)
- Antonia M. Frassino (ORCID: https://orcid.org/0000-0001-9937-486X)
- Andrew Svesko (ORCID: https://orcid.org/0000-0001-6108-6045)
Institutions
- Consejo Superior de Investigaciones Científicas (ES)
- University of Trieste (IT)
- King's College London (GB)
- Universidad de Alcalá (ES)
- Durham University (GB)
- Istituto Nazionale di Fisica Nucleare, Sezione di Trieste (IT)
- Universidad Autónoma de Madrid (ES)
- Universitat de Barcelona (ES)
Publication Details
- Journal
- International Journal of Modern Physics D
- Published
- 2025-09-18
- DOI
- https://doi.org/10.1142/s0218271825440249
- Citations
- 1
- Primary Topic
- Quantum Computing Algorithms and Architecture
- Type
- article
- Field-Weighted Citation Impact
- 2.48