scholarly journals Regular black holes in UV self-complete quantum gravity

2011 ◽  
Vol 701 (4) ◽  
pp. 471-474 ◽  
Author(s):  
Euro Spallucci ◽  
Stefano Ansoldi
Keyword(s):  
Black Holes ◽  
Quantum Gravity ◽  
Regular Black Holes ◽  
Complete Quantum

scholarly journals Black holes production in self-complete quantum gravity

2012 ◽  
Vol 709 (3) ◽  
pp. 266-269 ◽  
Author(s):  
Euro Spallucci ◽  
Anais Smailagic
Keyword(s):  
Black Holes ◽  
Quantum Gravity ◽  
Complete Quantum

scholarly journals A Second Law for higher curvature gravity

2015 ◽  
Vol 24 (12) ◽  
pp. 1544014 ◽  
Author(s):  
Aron C. Wall
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Quantum Gravity ◽  
Entanglement Entropy ◽  
Black Hole Thermodynamics ◽  
Gravity Theory ◽  
Second Law ◽  
Holographic Entanglement Entropy ◽  
Higher Curvature Gravity ◽  
Complete Quantum

The Second Law of black hole thermodynamics is shown to hold for arbitrarily complicated theories of higher curvature gravity, so long as we allow only linearized perturbations to stationary black holes. Some ambiguities in Wald’s Noether charge method are resolved. The increasing quantity turns out to be the same as the holographic entanglement entropy calculated by Dong. It is suggested that only the linearization of the higher curvature Second Law is important, when consistently truncating a UV-complete quantum gravity theory.

scholarly journals Inner horizon instability and the unstable cores of regular black holes

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Raúl Carballo-Rubio ◽  
Francesco Di Filippo ◽  
Stefano Liberati ◽  
Costantino Pacilio ◽  
Matt Visser
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Quantum Gravity ◽  
Inner Core ◽  
Singularity Problem ◽  
Regular Black Holes ◽  
Black Hole Spacetimes ◽  
Stellar Collapse ◽  
Inner Horizon ◽  
Linear Perturbations

Abstract Regular black holes with nonsingular cores have been considered in several approaches to quantum gravity, and as agnostic frameworks to address the singularity problem and Hawking’s information paradox. While in a recent work we argued that the inner core is destabilized by linear perturbations, opposite claims were raised that regular black holes have in fact stable cores. To reconcile these arguments, we discuss a generalization of the geometrical framework, originally applied to Reissner-Nordtsröm black holes by Ori, and show that regular black holes have an exponentially growing Misner-Sharp mass at the inner horizon. This result can be taken as an indication that stable nonsingular black hole spacetimes are not the definitive endpoint of a quantum gravity regularization mechanism, and that nonperturbative backreation effects must be taken into account in order to provide a consistent description of the quantum-gravitational endpoint of gravitational stellar collapse.

scholarly journals Black holes in an ultraviolet complete quantum gravity

2011 ◽  
Vol 695 (1-4) ◽  
pp. 397-400 ◽  
Author(s):  
Leonardo Modesto ◽  
John W. Moffat ◽  
Piero Nicolini
Keyword(s):  
Black Holes ◽  
Quantum Gravity ◽  
Complete Quantum

scholarly journals Generalisation for regular black holes on general relativity to f(R) gravity

2016 ◽  
Vol 76 (5) ◽  
Author(s):  
Manuel E. Rodrigues ◽  
Júlio C. Fabris ◽  
Ednaldo L. B. Junior ◽  
Glauber T. Marques
Keyword(s):  
Black Holes ◽  
General Relativity ◽  
Regular Black Holes
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