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 …

A bstract Entanglement islands play a crucial role in our understanding of how Hawking
radiation encodes information in a black hole, but their relevance in cosmological …

A bstract We consider four-dimensional general relativity with vanishing cosmological
constant defined on a manifold with a boundary. In Lorentzian signature, the timelike …

A bstract We use braneworld holography to construct a three-dimensional quantum-
corrected Kerr-de Sitter black hole, exactly accounting for semi-classical backreaction effects …

A bstract We investigate dilaton-gravity models whose solutions contain a large portion of
the static patch of dS 2. The thermodynamic properties of these theories are considered both …

These lecture notes provide an overview of different aspects of de Sitter space and their
plausible holographic interpretations. We start with a general description of the classical …

A bstract In the context of de Sitter static-patch holography, two prescriptions have been put
forward for holographic entanglement entropy computations, the monolayer and bilayer …

A bstract We analyze the thermodynamic response near extremality of charged black holes
in four-dimensional Einstein-Maxwell theory with a positive cosmological constant. The latter …

A bstract We calculate amplitudes for 2D vacuum transitions by means of the Euclidean
methods of Coleman-De Luccia (CDL) and Brown-Teitelboim (BT), as well as the …

A bstract According to static patch holography, de Sitter space admits a unitary quantum
description in terms of a dual theory living on the stretched horizon, that is a timelike surface …