384 citations · 8.6k across the 143 of their papers we have counts for
141 papers
The Phase Space of Gravity on Null Hypersurfaces
Luca Ciambelli, Laurent Freidel, Robert G. Leigh
We construct the bulk kinematical Poisson structure of general relativity on a caustic-free null segment, prior to imposing the Raychaudhuri and Damour constraints. We first show t…
Geometric noise spectrum in interferometers
Laurent Freidel, Robin Oberfrank
We study the power spectral density of time delay fluctuations in an interferometer as a potential low-energy quantum gravitational observable. We derive a general expression for t…
Quantum Null Geometry and Gravity
Luca Ciambelli, Laurent Freidel, Robert G. Leigh
In this work, we demonstrate that quantizing gravity on a null hypersurface leads to the emergence of a CFT associated with each null ray. This result stems from the ultralocal nat…
On the Definition of the Spin Charge in Asymptotically-Flat Spacetimes
Laurent Freidel, Seyed Faroogh Moosavian, Daniele Pranzetti
We propose a solution to a classic problem in gravitational physics consisting of defining the spin associated with asymptotically-flat spacetimes. We advocate that the correct asy…
Null Raychaudhuri: Canonical Structure and the Dressing Time
Luca Ciambelli, Laurent Freidel, Robert G. Leigh
We initiate a study of gravity focusing on generic null hypersurfaces, non-perturbatively in the Newton coupling. We present an off-shell account of the extended phase space of the…
On infinite symmetry algebras in Yang-Mills theory
Laurent Freidel, Daniele Pranzetti, Ana-Maria Raclariu
Similar to gravity, an infinite tower of symmetries generated by higher-spin charges has been identified in Yang-Mills theory by studying collinear limits or celestial operator pro…