Black Holes in Loop Quantum Gravity

Abstract

This is a review of the results on black hole physics in the framework of loop quantum gravity. The key feature underlying the results is the discreteness of geometric quantities at the Planck scale predicted by this approach to quantum gravity. Quantum discreteness follows directly from the canonical quantization prescription when applied to the action of general relativity that is suitable for the coupling of gravity with gauge fields and specially with fermions. Planckian discreteness and causal considerations provide the basic structure for the understanding of the thermal properties of black holes close to equilibrium. Discreteness also provides a fresh new look at more (at the moment) speculative issues such as those concerning the fate of information in black hole evaporation. The hypothesis of discreteness leads also to interesting phenomenology with possible observational consequences. The theory of loop quantum gravity is a developing program. This review reports its achievements and open questions in a pedagogical manner with an emphasis on quantum aspects of black hole physics.

Typos corrected, references corrected. To appear in Reports on Progress in Physics

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Cited by in corpus (90)

• A Short Review of Loop Quantum Gravity
• Shadow and Quasinormal Modes of a Rotating Loop Quantum Black Hole
• Regular black holes: A short topic review
• Geodesically complete black holes
• Tests of Loop Quantum Gravity from the Event Horizon Telescope Results of Sgr A${}^{\ast }$
• Exponential corrections to black hole entropy
• On the fate of quantum black holes
• Dark energy from quantum gravity discreteness
• Resolving the $H_0$ tension with diffusion
• Holonomy corrected Schwarzschild black hole lensing
• Constraints on the rotating self-dual black hole with quasi-periodic oscillations
• Properties of the spherically symmetric polymer black holes
• Gravitational lensing by a black hole in effective loop quantum gravity
• Sifting quantum black holes through the principle of least action
• Quantum evolution of black hole initial data sets: Foundations
• Black Holes as Quantum Gravity Condensates
• Constraints on self-dual black hole in loop quantum gravity with S0-2 star in the Galactic Center
• Loop quantum black hole
• Gravitational lensing effect of black holes in effective quantum gravity
• Are nonsingular black holes with super-Planckian hair ruled out by S2 star data?
• Observational tests of the self-dual spacetime in loop quantum gravity
• Inflation in Loop Quantum Cosmology
• Quasinormal modes of self-dual black holes in loop quantum gravity
• Temperature and entropy-area relation of quantum matter near spherically symmetric outer trapping horizons
• Gravitational collapse in effective loop quantum gravity: beyond marginally bound configurations
• Exploring Nonlinear Electrodynamics Theories: Shadows of Regular Black Holes and Horizonless Ultra-Compact Objects
• Photonsphere, shadow, quasinormal modes, and greybody bounds of non-rotating Simpson-Visser black hole
• Parameter constraints on a black hole with Minkowski core through quasiperiodic oscillations
• Shadows and optical appearance of quantum-corrected black holes illuminated by static thin accretions
• Periodic orbits and gravitational waveforms in quantum-corrected black hole spacetimes
• Higher-dimensional quantum Oppenheimer-Snyder model
• Holst-MacDowell-Mansouri action for (extended) supergravity with boundaries and super Chern-Simons theory
• From Planck area to graph theory: Topologically distinct black hole microstates
• Topologically Charged Holonomy corrected Schwarzschild black hole lensing
• New black-to-white hole solutions with improved geometry and energy conditions
• Quantum fields in the background spacetime of a loop quantum gravity black hole
• Observational tests of quantum extension of Schwarzschild spacetime in loop quantum gravity with stars in the galactic center
• Understanding quantum black holes from quantum reduced loop gravity
• The subtle unphysical hypothesis of the firewall theorem
• Gravitational Collapse in the EGB Gravity
• Planckian discreteness as seeds for cosmic structure
• Particle dynamics and the accretion disk around a Self-dual Black Hole immersed in a magnetic field in Loop Quantum Gravity
• Probing the quantum nature of black holes with ultra-light boson environments
• Closing the gaps in quantum space and time: Conformally augmented gauge structure of gravitation
• Light deflection and gravitational lensing effects inspired by loop quantum gravity
• Constraining LQG Graph with Light Surfaces: Properties of BH Thermodynamics for Mini-Super-Space, Semi-Classical Polymeric BH
• Quasinormal modes of a nonsingular spherically symmetric black hole effective model with holonomy corrections
• Eicheons instead of Black holes
• Effective metric outside bootstrapped Newtonian sources
• On the value of the Immirzi parameter and the horizon entropy
• Energy Extraction from Loop Quantum Black Holes: The Role of Magnetic Penrose Process and Quantum Gravity Effects with Astrophysical Insights
• An Effective Model for the Quantum Schwarzschild Black Hole: Weak Deflection Angle, Quasinormal Modes and Bounding of Greybody Factor
• Quasinormal modes of a charged loop quantum black hole
• Elementary charge and neutrino's mass from Planck length
• Quantization of time and the big bang via scale-invariant loop gravity
• Probing loop quantum effects through solar system experiments: observational signatures and parameter constraints
• Decoding quantum gravity information with black hole accretion disk
• Symmetric black-to-white hole solutions with a cosmological constant
• Black holes quasinormal modes, Loop Quantum Gravity Immirzi parameter and nonextensive statistics
• New Kind of Echo from Quantum Black Holes
• Quantum theory of charged isolated horizons
• Semiclassical Behavior of Spinfoam Amplitude with Small Spins and Entanglement Entropy
• Curvature effects in the spectral dimension of spin foams
• A dialog on the fate of information in black hole evaporation
• Strong gravitational lensing effects around rotating regular black holes
• Image of Quantum Improved Regular Kerr Black Hole and Parameter Constraints from EHT Observations
• Parameterized quasinormal frequencies and Hawking radiation for axial gravitational perturbations of a holonomy-corrected black hole
• Quasinormal modes and horizon area quantisation in Loop Quantum Gravity
• Quantum aspects of spacetime: A quantum optics view of acceleration radiation and black holes
• Topological Origin of Horizon Temperature via the Chern-Gauss-Bonnet Theorem
• Radiative properties of a nonsingular black hole: Hawking radiation and gray-body factor
• Information paradox and island of covariant black holes in LQG
• A Model of Spinfoam Coupled with an Environment
• Expansion operators in spherically symmetric loop quantum gravity
• Spherical trapped surfaces in n-dimensional general relativity
• Quantum black holes as solvents
• True gravitational atom: Spherical cloud of dilatonic black holes
• Seeing through a nearly black star
• Strong Gravitational Lensing by Compact Object without Cauchy Horizons in Effective Quantum Gravity
• Charged thin shells in unimodular gravity
• Barbero-Immirzi connections and how to build them
• Cosmic tango between the very small and the very large: Addressing CMB anomalies through Loop Quantum Cosmology
• Condensation of area quanta ensembles with quantum statistics in Schwarzschild spacetimes
• Nonsingular spherically symmetric black-hole model with holonomy corrections
• Note on $SU(2)$ isolated horizon
• LQG inspired spacetimes as solutions of the Einstein equations
• Categorical Quantum Volume Operator
• Extended geometry of Gambini-Olmedo-Pullin polymer black hole and its quasinormal spectrum
• Affine quantization of the dynamical Reissner--Nordström region
• Ergodic Concepts for a Self-Organizing Trivalent Spin Network: A Path to $(2+1)$-dimensional Black Hole Entropy