Zobrazeno 1 - 10
of 131
pro vyhledávání: '"Miskovic, Olivera"'
We apply the Hamiltonian formalism to investigate the massless sector of scalar field theory coupled with Maxwell electrodynamics through the Pontryagin term. Specifically, we analyze asymptotic symmetries at the null infinity of this theory, conserv
Externí odkaz:
http://arxiv.org/abs/2407.13866
AdS supergravity admits supersymmetric solutions that describe BPS defects. Here, we investigate such solutions in AdS$_3$ supergravity, which is formulated as a Chern-Simons theory on $\mathrm{OSp}(2|1)\,\times\, \mathrm{OSp}(2|1)$. We compute the K
Externí odkaz:
http://arxiv.org/abs/2402.00171
Autor:
Miskovic, Olivera, Olea, Rodrigo, Petropoulos, P. Marios, Rivera-Betancour, David, Siampos, Konstantinos
Publikováno v:
JHEP12(2023)130
In three-dimensional pseudo-Riemannian manifolds, the Cotton tensor arises as the variation of the gravitational Chern-Simons action with respect to the metric. It is Weyl-covariant, symmetric, traceless and covariantly conserved. Performing a reduct
Externí odkaz:
http://arxiv.org/abs/2310.19929
We explore the consistent truncation of conserved charges in Quadratic Curvature Gravity (QCG) with anti-de Sitter asymptotics to the linear order in the Weyl tensor. The QCG action is given by the most general curvature-squared corrections to Einste
Externí odkaz:
http://arxiv.org/abs/2307.00554
We discuss the emergence of a new symmetry generator in a Hamiltonian realisation of four-dimensional gauge theories in the flat space foliated by retarded (advanced) time. It generates an asymptotic symmetry that acts on the asymptotic fields in a w
Externí odkaz:
http://arxiv.org/abs/2304.03211
We provide new formulas for the energy of black hole solutions in the anti-de Sitter (AdS) sector of a generic gravity theory with curvature-squared terms. This is achieved by the addition of counterterms of the extrinsic type (\emph{Kounterterms}) w
Externí odkaz:
http://arxiv.org/abs/2205.10809
We study spontaneous scalarization of electrically charged extremal black holes in $D\geq 4$ spacetime dimensions. Such a phenomenon is caused by the symmetry breaking due to quartic interactions of the scalar -- Higgs potential and Stueckelberg inte
Externí odkaz:
http://arxiv.org/abs/2203.14388
Publikováno v:
JHEP11 (2021) 123
We study static black hole solutions with locally spherical horizons coupled to non-Abelian field in $\mathcal{N}=4$ Chern-Simons AdS$_5$ supergravity. They are governed by three parameters associated to the mass, axial torsion and amplitude of the i
Externí odkaz:
http://arxiv.org/abs/2106.01876
We show that the Kounterterms for pure AdS gravity in arbitrary even dimensions coincide with the boundary counterterms obtained through holographic renormalization if and only if the boundary Weyl tensor vanishes. In particular, the Kounterterms lea
Externí odkaz:
http://arxiv.org/abs/2003.06425
Publikováno v:
Phys. Rev. D 101, 064046 (2020)
We provide a simple method to compute the energy in higher curvature gravity in asymptotically AdS spacetimes in even dimensions. It follows from the combined use of topological terms added to the gravity action, and the Wald charges derived from the
Externí odkaz:
http://arxiv.org/abs/2001.09459