# Mass and horizon Dirac observables in effective models of quantum black-to-white hole transition

@article{Bodendorfer2021MassAH, title={Mass and horizon Dirac observables in effective models of quantum black-to-white hole transition}, author={Norbert Bodendorfer and Fabio M. Mele and Johannes M{\"u}nch}, journal={Classical and Quantum Gravity}, year={2021}, volume={38} }

In the past years, black holes and the fate of their singularity have been heavily studied within loop quantum gravity. Effective spacetime descriptions incorporating quantum geometry corrections are provided by the so-called polymer models. Despite the technical differences, the main common feature shared by these models is that the classical singularity is resolved by a black-to-white hole transition. In a recent paper (Bodendorfer et al 2019 Class. Quantum Grav. 36 195015), we discussed the…

## 36 Citations

Quantum corrected polymer black hole thermodynamics: mass relations and logarithmic entropy correction

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2022

In this paper, we continue the analysis of the effective model of quantum Schwarzschild black holes recently proposed by some of the authors in [1,2]. In the resulting quantum-corrected spacetime the…

Quantum dynamics of the black hole interior in LQC

- Physics
- 2020

It has been suggested that the homogeneous black hole interior spacetime, when quantized following the techniques of loop quantum cosmology, has a resolved singularity replaced by a black-to-white…

(b,v)-type variables for black to white hole transitions in effective loop quantum gravity

- Physics
- 2019

Effective quantum dust collapse via surface matching

- PhysicsClassical and Quantum Gravity
- 2021

The fate of matter forming a black hole is still an open problem, although models of quantum gravity corrected black holes are available. In loop quantum gravity (LQG) models were presented, which…

Towards understanding of loop quantum black holes

- Physics
- 2020

In this paper we systematically study a five-parameters class of spherically symmetric loop quantum black/white hole solutions, and find that only three independent combinations are physical and…

Black-Hole Models in Loop Quantum Gravity

- Physics
- 2020

Dynamical black-hole scenarios have been developed in loop quantum gravity in various ways, combining results from mini and midisuperspace models. In the past, the underlying geometry of space-time…

From black hole to white hole via the intermediate static state

- PhysicsModern Physics Letters A
- 2021

We discuss the macroscopic quantum tunneling from the black hole to the white hole of the same mass. Previous calculations in [G. E. Volovik, Universe 6, 133 (2020)] demonstrated that the probability…

Testing Loop Quantum Gravity from Observational Consequences of Nonsingular Rotating Black Holes.

- PhysicsPhysical review letters
- 2021

It is shown how fundamental parameters of LQG can be constrained by the observational implications of the shadow cast by this object, and the causal structure of the solution depends crucially only on the spacelike transition surface of the nonrotating seed metric, while being agnostic about specific details of the latter, and therefore captures universal features of an effective rotating, nonsingular black hole in L QG.

Deformed General Relativity and Quantum Black Holes Interior

- MathematicsUniverse
- 2020

Effective models of black holes interior have led to several proposals for regular black holes. In the so-called polymer models, based on effective deformations of the phase space of spherically…

On the possible spacetime structures of rotating loop quantum black holes

- PhysicsInternational Journal of Geometric Methods in Modern Physics
- 2022

To date, a mathematically consistent construction of effective rotating black hole models in the context of Loop Quantum Gravity (LQG) is still lacking. In this work, we start with the assumption…

## References

SHOWING 1-10 OF 64 REFERENCES

Effective quantum extended spacetime of polymer Schwarzschild black hole

- PhysicsClassical and Quantum Gravity
- 2019

The physical interpretation and eventual fate of gravitational singularities in a theory surpassing classical general relativity are puzzling questions that have generated a great deal of interest…

(b,v)-type variables for black to white hole transitions in effective loop quantum gravity

- Physics
- 2019

Phenomenological loop quantum geometry of the Schwarzschild black hole

- Physics
- 2008

The interior of a Schwarzschild black hole is investigated at the level of phenomenological dynamics with the discreteness corrections of loop quantum geometry implemented in two different improved…

Space-Time Structure of Loop Quantum Black Hole

- Physics
- 2008

In this paper we have improved the semiclassical analysis of loop quantum black hole (LQBH) in the conservative approach of constant polymeric parameter. In particular we have focused our attention…

Quantum black holes in loop quantum gravity

- Physics
- 2014

We study the quantization of spherically symmetric vacuum spacetimes within loop quantum gravity. In particular, we give additional details about our previous work in which we showed that one could…

From black holes to white holes: a quantum gravitational, symmetric bounce

- Physics
- 2017

Recently, a consistent non-perturbative quantization of the Schwarzschild interior resulting in a bounce from black hole to white hole geometry has been obtained by loop quantizing the…

Effective line elements and black-hole models in canonical loop quantum gravity

- PhysicsPhysical Review D
- 2018

Canonical quantization is often used to suggest new effects in quantum gravity, in the dynamics as well as the structure of space-time. Usually, possible phenomena are first seen in a modified…

Quantum extension of the Kruskal spacetime

- PhysicsPhysical Review D
- 2018

A new description of macroscopic Kruskal black holes that incorporates the quantum geometry corrections of loop quantum gravity is presented. It encompasses both the `interior' region that contains…

Phenomenological dynamics of loop quantum cosmology in Kantowski-Sachs spacetime

- Physics
- 2008

The fundamental theory and the semiclassical description of loop quantum cosmology (LQC) have been studied in the Friedmann-Robertson-Walker and Bianchi I models. As an extension to include both…

Black hole entropy in loop quantum gravity

- Physics
- 2004

We calculate the black-hole entropy in loop quantum gravity as a function of the horizon area and provide the exact formula for the leading and sub-leading terms. By comparison with the…