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Nonsingular black holes, the cosmological constant, and asymptotic safety

Torres Herrera, Ramon

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Título:
Nonsingular black holes, the cosmological constant, and asymptotic safety
Autor: Torres Herrera, Ramon
Assuntos: Black holes (Astronomy) ; Forats negres (Astronomia) ; Física ; Àrees temàtiques de la UPC
Descrição: Quantum gravitational effects in black hole spacetimes with a cosmological constant ¿ are considered. The effective quantum spacetimes for the black holes are constructed by taking into account the renormalization group improvement of classical solutions obtained in the framework of unimodular gravity (a theory which is identical to general relativity at a classical level). This allows us to avoid the usual divergences associated with the presence of a running ¿. The horizons and causal structure of the improved black holes are discussed, taking into account the current observational bounds for the cosmological constant. It is shown that the resulting effective quantum black hole spacetimes are always devoid of singularities. Peer Reviewed
Data de criação/publicação: 2017
Idioma: Inglês

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