9 papers
The endless journey towards the horizon of a quantum black hole
Victor Franken, Thomas G. Mertens, Bruno de S. L. Torres
It is a problem of great importance in quantum gravity whether quantum effects lead to nontrivial structure near black hole horizons, and if their interiors are emergent features o…
Falling through the horizon of a quantum black hole
Victor Franken, Thomas G. Mertens, Bruno de S. L. Torres
We study quantum-gravitational effects on the response of an infalling detector as it crosses the horizon of a near-extremal black hole in the framework of quantum JT gravity. Thes…
Ordering-Independent Wheeler-DeWitt Equation for Flat Minisuperspace Models
Victor Franken, Eftychios Kaimakkamis, Hervé Partouche +1
We consider minisuperspace models with two-derivative kinetic terms, assuming a flat target space and a closed Universe. We show that, upon canonical quantization of the Hamiltonia…
Information-theoretic constraints in quantum gravity and cosmology
Victor Franken
In this dissertation, we review results on quantum information constraints in gravity that are relevant to cosmological models and demonstrate how this approach sheds light on cosm…
Tests of restricted Quantum Focusing and a new CFT bound
Victor Franken, Sami Kaya, François Rondeau +2
The restricted quantum focusing conjecture (rQFC) plays a central role in an axiomatic formulation of semiclassical gravity. Since much hinges on its validity, it is imperative to…
Horizon causality from holographic scattering in asymptotically dS
Victor Franken, Takato Mori
In the AdS/CFT correspondence, a direct scattering in the bulk may not have a local boundary analog. A nonlocal implementation on the boundary requires mutual informatio…