activity
20032026
most citedAverage expansion rate and light propagation in a cosmological Tardis spacetime

79 citations · 286 across the 27 of their papers we have counts for

collaborators

27 papers

gr-qc2026

Near--extremal gravitational collapse in 4+1 dimensions: Schwarzschild--de--Sitter space

Maciej Dunajski, Sebastian J. Szybka

We numerically study a formation of near extremal horizons from a gravitational collapse of radially symmetric gravitational waves in dimensions within the framework of pure…

gr-qc2025

Some inequalities among curvature invariants

Sebastian J. Szybka, Yaroslava Kravetska, Kornelia Nikiel

We prove an infinite sequence of inequalities among scalar polynomial invariants of symmetric rank-2 tensors of Segre types , , and . In particular, these inequalities a…

gr-qc2025

Backreaction of Halilsoy and Chandrasekhar waves

Sebastian J. Szybka, Adam A. Zychowicz, Dominika Hunik

We calculate the high-frequency limit of the Halilsoy and Chandrasekhar standing gravitational wave solutions. We show that the backreaction effect is the same for these classes of…

gr-qc2025★ 1 cited

Halilsoy and Chandrasekhar standing gravitational waves in the linear approximation

Kornelia Nikiel, Sebastian J. Szybka

Halilsoy and Chandrasekhar cylindrical standing gravitational waves correspond to two different classes of solutions to the vacuum Einstein equations. Both families satisfy the def…

gr-qc2023★ 6 cited

Chaos and Einstein-Rosen gravitational waves

Sebastian J. Szybka, Syed U. Naqvi

We demonstrate the existence of chaotic geodesics for the Einstein-Rosen standing gravitational waves. The complex dynamics of massive test particles are governed by a chaotic hete…

gr-qc2021★ 2 cited

Example of cross-polarized standing gravitational waves

Krzysztof Głód, Szymon Sikora, Sebastian J. Szybka

We use a cosmological counterpart of the cylindrical Halilsoy solution to illustrate properties of cross-polarized standing gravitational waves.