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gr-qc2026
Rotating traversable wormholes and particle dynamics in gravity
G. G. L. Nashed, Waleed El Hanafy, Amare Abebe +2
Traversable wormholes are among the most interesting solutions of gravitational theories, but within General Relativity they generally require exotic matter violating the null ener…
gr-qc2025
Buchdahl limit of compact stars in presence of Weyl anomaly
Waleed El Hanafy, G. G. L. Nashed
We setup an anisotropic compact star model in presence of Weyl ``trace" anomaly. We derive an exact interior solution which determines the contribution of the vacuum trace anomaly.…
gr-qc2025
Stable soliton dark matter wormhole in non-minimally coupled gravity
G. G. L. Nashed, Waleed El Hanafy
We show that non-minimal coupling between matter and geometry can indeed help in constructing stable, traversable, wormholes (WHs) without requiring exotic matter under certain con…