A short review of loop quantum gravity
An outstanding open issue in our quest for physics beyond Einstein is the unification of
general relativity (GR) and quantum physics. Loop quantum gravity (LQG) is a leading …
general relativity (GR) and quantum physics. Loop quantum gravity (LQG) is a leading …
Corner symmetry and quantum geometry
By virtue of the Noether theorems, the vast gauge redundancy of general relativity provides
us with a rich algebra of boundary charges that generate physical symmetries. These …
us with a rich algebra of boundary charges that generate physical symmetries. These …
The Weyl BMS group and Einstein's equations
A bstract We propose an extension of the BMS group, which we refer to as Weyl BMS or
BMSW for short, that includes super-translations, local Weyl rescalings and arbitrary …
BMSW for short, that includes super-translations, local Weyl rescalings and arbitrary …
Null Raychaudhuri: canonical structure and the dressing time
A bstract 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 …
perturbatively in the Newton coupling. We present an off-shell account of the extended …
Higher spin dynamics in gravity and celestial symmetries
In this paper we extract from a large-r expansion of the vacuum Einstein's equations a
dynamical system governing the time evolution of an infinity of higher-spin charges. Upon …
dynamical system governing the time evolution of an infinity of higher-spin charges. Upon …
Extended corner symmetry, charge bracket and Einstein's equations
A bstract We develop the covariant phase space formalism allowing for non-vanishing flux,
anomalies, and field dependence in the vector field generators. We construct a charge …
anomalies, and field dependence in the vector field generators. We construct a charge …
Edge modes of gravity. Part I. Corner potentials and charges
A bstract This is the first paper in a series devoted to understanding the classical and
quantum nature of edge modes and symmetries in gravitational systems. The goal of this …
quantum nature of edge modes and symmetries in gravitational systems. The goal of this …
Edge modes of gravity. Part II. Corner metric and Lorentz charges
A bstract In this second paper of the series we continue to spell out a new program for
quantum gravity, grounded in the notion of corner symmetry algebra and its representations …
quantum gravity, grounded in the notion of corner symmetry algebra and its representations …
Dynamical edge modes and entanglement in Maxwell theory
A Ball, YT Law, G Wong - Journal of High Energy Physics, 2024 - Springer
A bstract Previous work on black hole partition functions and entanglement entropy suggests
the existence of “edge” degrees of freedom living on the (stretched) horizon. We identify a …
the existence of “edge” degrees of freedom living on the (stretched) horizon. We identify a …
Embeddings and integrable charges for extended corner symmetry
We revisit the problem of extending the phase space of diffeomorphism-invariant theories to
account for embeddings associated with the boundary of subregions. We do so by …
account for embeddings associated with the boundary of subregions. We do so by …