In this review, recent progress on the black hole information problem that involves a new
understanding of how to calculate the entropy of Hawking radiation is described. The review …

The Swampland program aims to distinguish effective theories which can be completed into
quantum gravity in the ultraviolet from those which cannot. This article forms an introduction …

Horizon-scale images of black holes (BHs) and their shadows have opened an
unprecedented window onto tests of gravity and fundamental physics in the strong-field …

A bstract We describe an algebra of observables for a static patch in de Sitter space, with
operators gravitationally dressed to the worldline of an observer. The algebra is a von …

We provide an overview of the string landscape and the Swampland program. Our review of
the string landscape covers the worldsheet and spacetime perspectives, including vacua …

A bstract We discuss holographic models of extremal and non-extremal black holes in
contact with a bath in d dimensions, based on a brane world model introduced in [1]. The …

We review the role that infinite-dimensional symmetries arising at the boundary of
asymptotically flat spacetimes play in the context of the celestial holography program. Once …

A bstract Recent progress in our understanding of the black hole information paradox has
lead to a new prescription for calculating entanglement entropies, which involves special …

A bstract We consider quantum algebras of observables associated with subregions in
theories of Einstein gravity coupled to matter in the GN→ 0 limit. When the subregion is …

It has been suggested in recent work that the Page curve of Hawking radiation can be
recovered using computations in semi-classical gravity provided one allows for" islands" in …