Signature change in 2-dimensional black-hole models of loop quantum gravity

Abstract

Signature change has been identified as a generic consequence of holonomy modifications in spherically symmetric models of loop quantum gravity with real connections, which includes modified Schwarzschild solutions. Here, this result is extended to 2-dimensional dilaton models and to different choices of canonical variables, including in particular the Callan-Giddings-Harvey-Strominger (CGHS) solution. New obstructions are found to coupling matter and to including operator-ordering effects in an anomaly-free manner.

18 pages

References in corpus (10)

• Spherically Symmetric Quantum Geometry: States and Basic Operators
• Non-marginal LTB-like models with inverse triad corrections from loop quantum gravity
• Anomaly-free cosmological perturbations in effective canonical quantum gravity
• Spherically symmetric canonical quantum gravity
• Spherically symmetric sector of self dual Ashtekar gravity coupled to matter: Anomaly-free algebra of constraints with holonomy corrections
• Information loss, made worse by quantum gravity?
• Callan-Giddings-Harvey-Strominger vacuum in loop quantum gravity and singularity resolution
• Dilaton Gravity, Poisson Sigma Models and Loop Quantum Gravity
• A new look at scalar perturbations in loop quantum cosmology: (un)deformed algebra approach using self dual variables
• Comment on "New variables for 1+1 dimensional gravity"

Cited by in corpus (26)

• Effective Quantum Extended Spacetime of Polymer Schwarzschild Black Hole
• A consistent model of non-singular Schwarzschild black hole in loop quantum gravity and its quasinormal modes
• Perspectives on the dynamics in a loop quantum gravity effective description of black hole interiors
• Black hole singularity resolution via the modified Raychaudhuri equation in loop quantum gravity
• The Thiemann Complexifier and the CVH algebra for Classical and Quantum FLRW Cosmology
• Annihilation-to-nothing: a quantum gravitational boundary condition for the Schwarzschild black hole
• Deformed algebra and the effective dynamics of the interior of black holes
• Effective black-to-white hole bounces: The cost of surgery
• Non-covariance of "covariant polymerization" in models of loop quantum gravity
• Constraining the loop quantum gravity parameter space from phenomenology
• Annihilation-to-nothing: DeWitt boundary condition inside a black hole
• Rainbow-like Black Hole metric from Loop Quantum Gravity
• Constraints from Solar System tests on a covariant loop quantum black hole
• Effective Field Theory of Loop Quantum Cosmology
• Quantum gravity phenomenology at the dawn of the multi-messenger era -- A review
• Deformed covariance in spherically symmetric vacuum models of loop quantum gravity: Consistency in Euclidean and self-dual gravity
• Quasinormal modes of a charged loop quantum black hole
• Loop Quantum Corrected Einstein Yang-Mills Black Holes
• The continuum limit of quantum gravity at second order in perturbation theory
• Quasiclassical solutions for static quantum black holes
• Circular orbits and accretion disk around a deformed-Schwarzschild black hole in loop quantum gravity
• Deformed general relativity and scalar-tensor models
• The general scalar-tensor Hamiltonian with deformed covariance
• Deformed general relativity
• Black hole or Fuzz ball or a Loop quantum star ? Assessing the fate of a massive collapsing star
• Black-hole models in loop quantum gravity