FAU^2 Workshop on quantum gravity across scales: from physics at the Planck scale to effective theories

Session

Session 6

22 May 2025, 17:20

ECAP Laboratory Building

51. Darboux transformations in the interior of nonrotating black holes

Guillermo A. Mena Marugán (IEM, CSIC)

22/05/2025, 17:20

invited talk

There is a growing interest in investigating Kantowski-Sachs cosmologies owing to their relation with the interior of nonrotating, uncharged black holes. In particular, we recently developed a Hamiltonian formulation of axial perturbations for a massless scalar field minimally coupled to these cosmologies, describing physical perturbations by gauge invariants. Adopting this formulation, we...

57. Hawking evaporation in Loop Quantum Gravity

Idrus Husin Belfaqih

22/05/2025, 18:00

contributed talk

A recent covariant formulation, which includes non-perturbative effects from loop quantum gravity (LQG) as self-consistent effective models, has revealed the possibility of non-singular black hole solutions. The new framework makes it possible to couple scalar matter to such LQG black holes and derive Hawking radiation in the presence of quantum space-time effects while respecting general...

41. Across the Horizon: Singularities in Quantum Black Hole Spacetimes

Sofie Ried (Univesity of Sheffield)

22/05/2025, 18:30

contributed talk

Black holes serve as key testing grounds for quantum gravity due to their singular nature and have been extensively studied in various quantum gravity approaches. In this talk, I apply the Henneaux-Teitelboim formulation of unimodular gravity to the symmetry-reduced Schwarzschild-(Anti-)de Sitter model. We perform a canonical quantization, leading to a Wheeler-DeWitt equation that takes the...