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-classic...

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Detalhes bibliográficos
Autores: Frassino, A.M., Hennigar, R.A., Pedraza, J.F., Svesko, A.
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2025
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::ff1699fc5d8f5056fc3109a154fd8afd
Acesso em linha:http://hdl.handle.net/10261/429219
https://www.scopus.com/pages/publications/105017454939?origin=resultslist
Access Level:Acceso aberto
Palavra-chave:Cosmic censorship
holography
quantum black holes
semi-classical gravity
Descrição
Resumo: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. © 2025 World Scientific Publishing Company.