7–12 Jul 2024
Aurum, the ‘Gabriele d’Annunzio’ University and ICRANet
Europe/Rome timezone

Wormholes geometries in f(R,T^2) gravity satisfying the energy conditions

12 Jul 2024, 15:00
20m
M3 (Palazzo Micara of the ‘Gabriele d’Annunzio’ University)

M3

Palazzo Micara of the ‘Gabriele d’Annunzio’ University

Viale Pindaro, 42, Pescara
Talk in a parallel session Wormholes, energy conditions and time machines Wormholes, energy conditions and time machines

Speakers

Mrs Nailya Ganiyeva (Instituto de Astrofísica e Ciências do Espaço, University of Lisbon) Francisco Lobo (Science Faculty of the University of Lisbon)

Description

In this work we analyze traversable wormhole spacetimes in the framework of a covariant generalization of Einstein's General Relativity known as energy-momentum squared gravity. Here, we show that a wide variety of wormhole solutions for which the matter fields satisfy all the energy conditions, namely the null, weak, strong and dominant energy conditions, exist in this framework, without the necessity for a fine-tuning of the free parameters that describe the model. For that purpose, we derive the junction conditions for the theory, and we prove that a matching between two spacetimes must always be smooth, i.e., no thin-shells are allowed at the boundary. Finally, we use these junction conditions to match the interior wormhole spacetime to an exterior vacuum described by the Schwarzschild solution, thus obtaining traversable localized static and spherically symmetric wormhole solutions satisfying all energy conditions for the whole spacetime range.

Primary authors

Mrs Nailya Ganiyeva (Instituto de Astrofísica e Ciências do Espaço, University of Lisbon) Francisco Lobo (Science Faculty of the University of Lisbon) Dr João Luís Rosa (University of Gdansk)

Presentation materials

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