10.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR3.6k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR3.2k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR3k papers
- Joint Institute for Nuclear ResearchRU2.7k papers
- Institute for High Energy PhysicsES2.7k papers
- European Organization for Nuclear ResearchCH2.6k papers
- Institut de Recherche sur les Lois Fondamentales de l'UniversFR2.6k papers
- Institute of High Energy PhysicsCN2.6k papers
- Rutherford Appleton LaboratoryGB2.5k papers
- Deutsches Elektronen-Synchrotron DESYDE2.5k papers
- National and Kapodistrian University of AthensGR2.5k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di NapoliIT2.4k papers
21 papers · 2 filters
Gravitational radiation and the evolution of gravitational collapse in cylindrical symmetry
Alfonso García-Parrado, Filipe C. Mena
Using the Sparling form and a geometric construction adapted to spacetimes with a 2-dimensional isometry group, we analyse a quasi-local measure of gravitational energy. We then st…
New Weyl-invariant vector-tensor theory for the cosmological constant
Pavel Jiroušek, Alexander Vikman
We introduce a new Weyl-invariant and generally-covariant vector-tensor theory with higher derivatives. This theory can be induced by extending the mimetic construction to vector f…
Einstein-Maxwell fields with vanishing higher-order corrections
Martin Kuchynka, Marcello Ortaggio
We obtain a full characterization of Einstein-Maxwell -form solutions in -dimensions for which all higher-order corrections vanish identical…
Almost universal spacetimes in higher-order gravity theories
Martin Kuchynka, Tomáš Málek, Vojtěch Pravda +1
We study almost universal spacetimes - spacetimes for which the field equations of any generalized gravity with the Lagrangian constructed from the metric, the Riemann tensor and i…
Type D conformal initial data
Alfonso García-Parrado
For a vacuum initial data set of the Einstein field equations it is possible to carry out a conformal rescaling or conformal compactification of the data giving rise to an initial…
All solutions of Einstein's equations in 2+1 dimensions: -vacuum, pure radiation, or gyratons
Jiri Podolsky, Robert Svarc, Hideki Maeda
Under a weak assumption of the existence of a geodesic null congruence, we present the general solution of the Einstein field equations in three dimensions with any value of the co…
Dynamical analysis of a first order theory of bulk viscosity
Giovanni Acquaviva, Aroonkumar Beesham
We perform a global analysis of curved Friedmann-Robertson-Walker cosmologies in the presence of a viscous fluid. The fluid's bulk viscosity is governed by a first order theory rec…
Interpreting A and B-metrics with as gravitational field of a tachyon in (anti-)de Sitter universe
Ondrej Hruska, Jiri Podolsky
We investigate main properties and mutual relations of the so-called A and B-metrics with any value of the cosmological constant. In particular, we explicitly show that both the AI…
Decreasing entropy of dynamical black holes in critical gravity
Hideki Maeda, Robert Svarc, Jiri Podolsky
Critical gravity is a quadratic curvature gravity in four dimensions which is ghost-free around the AdS background. Constructing a Vaidya-type exact solution, we show that the area…
Explicit black hole solutions in higher-derivative gravity
Jiri Podolsky, Robert Svarc, Vojtech Pravda +1
We present, in an explicit form, the metric for all spherically symmetric Schwarzschild-Bach black holes in Einstein-Weyl theory. In addition to the black hole mass, this complete…
Exact black holes in quadratic gravity with any cosmological constant
Robert Svarc, Jiri Podolsky, Vojtech Pravda +1
We present a new explicit class of black holes in general quadratic gravity with a cosmological constant. These spherically symmetric Schwarzschild-Bach-(anti-)de Sitter geometries…
On Integrability of the Geodesic Deviation Equation
Marco Cariglia, Tsuyoshi Houri, Pavel Krtous +1
The Jacobi equation for geodesic deviation describes finite size effects due to the gravitational tidal forces. In this paper we show how one can integrate the Jacobi equation in a…
Covariant conserved currents for scalar-tensor Horndeski theory
Josef Schmidt, Jiří Bičák
The scalar-tensor theories have become popular recently in particular in connection with attempts to explain present accelerated expansion of the universe, but they have been consi…
Schwarzschild black hole encircled by a rotating thin disc: Properties of perturbative solution
P. Kotlařík, O. Semerák, P. Čížek
In ApJ (1974), Will solved the perturbation of a Schwarzschild black hole due to a slowly rotating light concentric thin ring, using Green's functions expressed as infinite-sum exp…
Non-expanding Plebanski-Demianski space-times
Jiri Podolsky, Ondrej Hruska, Jerry B. Griffiths
The aim of this work is to describe the complete family of non-expanding Plebanski-Demianski type D space-times and to present their possible interpretation. We explicitly express…
A gravitational energy-momentum and the thermodynamic description of gravity
Giovanni Acquaviva, David Kofroň, Martin Scholtz
A proposal for the gravitational energy-momentum tensor, known in the literature as the square root of Bel-Robinson tensor, is analyzed in detail. Being constructed exclusively fro…
Quasilocal horizons in inhomogeneous cosmological models
Eliška Polášková, Otakar Svítek
We investigate quasilocal horizons in inhomogeneous cosmological models, specifically concentrating on the notion of a trapping horizon defined by Hayward as a hypersurface foliate…
Generalized uncertainty principle impact onto the black holes information flux and the sparsity of Hawking radiation
Ana Alonso-Serrano, Mariusz P. Dabrowski, Hussain Gohar
We investigate the generalized uncertainty principle (GUP) corrections to the entropy content and the information flux of black holes, as well as the corrections to the sparsity of…
Boyer-Lindquist space-times and beyond: Meta-material analogues
Sebastian Schuster, Matt Visser
Analogue space-times (and in particular metamaterial analogue space-times) have a long varied and complex history. Much of the previous related work has focused on spherically symm…
quantum cosmology: avoiding the Big Rip
Ana Alonso-Serrano, Mariam Bouhmadi-Lopez, Prado Martin-Moruno
Extended theories of gravity have gathered a lot of attention over the last years, for they not only provide an excellent framework to describe the inflationary era but also yields…
Quantization of the Szekeres System
A. Paliathanasis, Adamantia Zampeli, T. Christodoulakis +1
We study the quantum corrections on the Szekeres system in the context of canonical quantization in the presence of symmetries. We start from an effective point-like Lagrangian wit…