The holographic nature of null infinity
We argue that, in a theory of quantum gravity in a four dimensional asymptotically flat
spacetime, all information about massless excitations can be obtained from an infinitesimal …
spacetime, all information about massless excitations can be obtained from an infinitesimal …
Classical central extension for asymptotic symmetries at null infinity in three spacetime dimensions
The symmetry algebra of asymptotically flat spacetimes at null infinity in three dimensions is
the semi-direct sum of the infinitesimal diffeomorphisms on the circle with an Abelian ideal of …
the semi-direct sum of the infinitesimal diffeomorphisms on the circle with an Abelian ideal of …
Correspondence between Asymptotically Flat Spacetimes and Nonrelativistic<? format?> Conformal Field Theories
A Bagchi - Physical review letters, 2010 - APS
We find a surprising connection between asymptotically flat spacetimes and nonrelativistic
conformal systems in one lower dimension. The Bondi-Metzner-Sachs (BMS) group is the …
conformal systems in one lower dimension. The Bondi-Metzner-Sachs (BMS) group is the …
Thermodynamical hairs of the four-dimensional Taub-Newman-Unti-Tamburino spacetimes
SQ Wu, D Wu - Physical Review D, 2019 - APS
It is demonstrated that the generic four-dimensional Taub-Newman-Unti-Tamburino (Taub-
NUT) spacetimes can be perfectly described in terms of three or four different kinds of …
NUT) spacetimes can be perfectly described in terms of three or four different kinds of …
Thermodynamics of black holes in two (and higher) dimensions
A comprehensive treatment of black hole thermodynamics in two-dimensional dilaton gravity
is presented. We derive an improved action for these theories and construct the Euclidean …
is presented. We derive an improved action for these theories and construct the Euclidean …
[HTML][HTML] The scalarised Schwarzschild-NUT spacetime
Y Brihaye, C Herdeiro, E Radu - Physics Letters B, 2019 - Elsevier
It has recently been suggested that vacuum black holes of General Relativity (GR) can
become spontaneously scalarised when appropriate non-minimal couplings to curvature …
become spontaneously scalarised when appropriate non-minimal couplings to curvature …
Trace anomaly and counterterms in designer gravity
A bstract We construct concrete counterterms of the Balasubramanian-Kraus type for
Einstein-scalar theories with designer gravity boundary conditions in AdS 4, so that the total …
Einstein-scalar theories with designer gravity boundary conditions in AdS 4, so that the total …
Relaxing the parity conditions of asymptotically flat gravity
G Compere, F Dehouck - Classical and quantum gravity, 2011 - iopscience.iop.org
Four-dimensional asymptotically flat spacetimes at spatial infinity are defined from first
principles without imposing parity conditions or restrictions on the Weyl tensor. The Einstein …
principles without imposing parity conditions or restrictions on the Weyl tensor. The Einstein …
[HTML][HTML] Scalar charges and the first law of black hole thermodynamics
We present a variational formulation of Einstein–Maxwell-dilaton theory in flat spacetime,
when the asymptotic value of the scalar field is not fixed. We obtain the boundary terms that …
when the asymptotic value of the scalar field is not fixed. We obtain the boundary terms that …
Symmetries and conservation laws in Lagrangian gauge theories with applications to the mechanics of black holes and to gravity in three dimensions
G Compere - arxiv preprint arxiv:0708.3153, 2007 - arxiv.org
The treatment of exact conservation laws in Lagrangian gauge theories constitutes the main
axis of the first part of the thesis. The formalism is developed as a self-consistent theory but …
axis of the first part of the thesis. The formalism is developed as a self-consistent theory but …