Quasinormal modes are eigenmodes of dissipative systems. Perturbations of classical
gravitational backgrounds involving black holes or branes naturally lead to quasinormal …

The wide applications of higher dimensional gravity and gauge/gravity duality have fuelled
the search for new stationary solutions of the Einstein equation (possibly coupled to matter) …

We study the nonlinear evolution of a weakly perturbed anti–de Sitter (AdS) space by
solving numerically the four-dimensional spherically symmetric Einstein-massless-scalar …

Using the dictionary between Bondi and Fefferman–Graham gauges, we identify the
analogues of the Bondi news, Bondi mass and Bondi angular momentum aspects at the …

This book offers a systematic exposition of conformal methods and how they can be used to
study the global properties of solutions to the equations of Einstein's theory of gravity. It …

We describe a new class of boundary conditions for AdS d+ 1 under which the boundary
metric becomes a dynamical field. The key technical point is to show that contributions from …

We consider the memory effect in even dimensional spacetimes of dimension $ d\geqslant
4$ arising from a burst of gravitational radiation. When $ d= 4$, the natural frames in the …

A bstract The gravitational charge algebra of generic asymptotically locally (A) dS
spacetimes is derived in n dimensions. The analysis is performed in the …

It was recently shown that the von Neumann algebras of observables dressed to the mass of
a Schwarzschild-AdS black hole or an observer in de Sitter are Type II, and thus admit well …

In AdS, scalar fields with masses slightly above the Breitenlohner-Freedman bound admit a
variety of possible boundary conditions which are reflected in the Lagrangian of the dual …