5 papers
At the Corner of Quantum and Gravity
Ludovic Varrin
In the presence of spacetime boundaries, diffeomorphisms in gravitational theories can become physical and acquire non-vanishing Noether charges. These charges obey an algebra whic…
On the non-commutativity of geometric observables in different Lorentz frames
Mehdi Assanioussi, Jerzy Kowalski-Glikman, Ilkka Mäkinen +1
Our aim is to establish whether geometric observables, such as length, area or volume of a physical object, viewed by different observers Poisson commute or not. To illustrate this…
Entanglement Entropy of Quantum Corners
Luca Ciambelli, Jerzy Kowalski-Glikman, Ludovic Varrin
In gravitational theories with boundaries, diffeomorphisms can become physical and acquire a non-vanishing Noether charge. Using the covariant phase space formalism, on shell of th…
Orbit method for Quantum Corner Symmetries
Giulio Neri, Ludovic Varrin
The classification of the unitary irreducible representations of symmetry groups is a cornerstone of modern quantum physics, as it provides the fundamental building blocks for cons…
Physical Representations of Corner Symmetries
Ludovic Varrin
We give the full representation theory of the gravitational extended corner symmetry group in two-dimensions. This includes projective representations, which correspond to represen…