11 citations · 33 across the 8 of their papers we have counts for
8 papers
Bertotti-Robinson and Bonnor-Melvin universes in nonlinear electrodynamics
David Kubiznak, Otakar Svitek, Tayebeh Tahamtan
We review the status of Birkhoff's theorem in the presence of nonlinear electrodynamics (NLE) - extending the analysis to the case without asymptotic flatness. This leads to the Be…
Well-posed non-vacuum solutions in Robinson--Trautman geometry
T. Tahamtan, D. Flores-Alfonso, O. Svitek
We study nonlinear matter models compatible with radiative Robinson--Trautman spacetimes and analyze their stability and well-posedness. The results lead us to formulate a conjectu…
Phantom scalar field counterpart to Curzon-Chazy spacetime
Lukáš Polcar, Otakar Svítek
We derive and analyze phantom scalar field counterpart to Curzon-Chazy spacetime. Such solution contains wormhole throat while the region inside the throat behaves like a one-direc…
Reversing the Null Limit of the Szekeres Metric
Charles Hellaby, Otakar Svítek
The null limits of the Lemaitre-Tolman and Szekeres spacetimes are known to be the Vaidya and news-free Robinson-Trautman metrics. We generalise this result to the case of non-zero…
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…
Quantum fate of timelike naked singularity with scalar hair
O. Svitek, T. Tahamtan, A. Zampeli
We study the quantum fate of a naked curvature singularity sourced by a scalar field via several methods and compare the results obtained. The first method relies on relativistic q…
Nonsymmetric Dynamical Thin-Shell Wormhole in Robinson--Trautman Class
O. Svitek, T. Tahamtan
The thin-shell wormhole created using the Darmois-Israel formalism applied to Robinson-Trautman family of spacetimes is presented. The stress energy tensor created on the throat is…
Kundt spacetimes minimally coupled to scalar field
T. Tahamtan, O. Svitek
We derive an exact solution belonging to Kundt class of spacetimes both with and without a cosmological constant that are minimally coupled to a free massless scalar field. We show…