75 citations · 143 across the 8 of their papers we have counts for
8 papers
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…
On higher dimensional Einstein spacetimes with a non-degenerate double Weyl aligned null direction
Marcello Ortaggio, Vojtěch Pravda, Alena Pravdová
We prove that higher dimensional Einstein spacetimes which possess a geodesic, non-degenerate double Weyl aligned null direction (WAND) must additionally possess a second do…
Type II universal spacetimes
Sigbjørn Hervik, Tomáš Málek, Vojtěch Pravda +1
We study type II universal metrics of the Lorentzian signature. These metrics simultaneously solve vacuum field equations of all theories of gravitation with the Lagrangian being a…
Asymptotic properties of gravitational and electromagnetic fields in higher dimensions
Marcello Ortaggio, Alena Pravdová
We summarize the fall-off of electromagnetic and gravitational fields in n>5 dimensional Ricci-flat spacetimes along an asympotically expanding non-singular geodesic null congruenc…
Asymptotic behaviour of the Weyl tensor in higher dimensions
Marcello Ortaggio, Alena Pravdová
We determine the leading order fall-off behaviour of the Weyl tensor in higher dimensional Einstein spacetimes (with and without a cosmological constant) as one approaches infinity…
On the Goldberg-Sachs theorem in higher dimensions in the non-twisting case
Marcello Ortaggio, Vojtěch Pravda, Alena Pravdová
We study a generalization of the "shear-free part" of the Goldberg-Sachs theorem for Einstein spacetimes admitting a non-twisting multiple Weyl Aligned Null Direction (WAND) l in n…
VSI_i spacetimes and the epsilon-property
N. Pelavas, A. Coley, R. Milson +2
We investigate Lorentzian spacetimes where all zeroth and first order curvature invariants vanish and discuss how this class differs from the one where all curvature invariants van…
Generalizations of pp-wave spacetimes in higher dimensions
A. Coley, R. Milson, N. Pelavas +3
We shall investigate -dimensional Lorentzian spacetimes in which all of the scalar invariants constructed from the Riemann tensor and its covariant derivatives are zero. These s…