88 citations · 378 across the 16 of their papers we have counts for
16 papers
A No-Go Theorem for Curvature Neutrality in f(Q) Cosmology?
Gamal G. L. Nashed, Amare Abebe
In the framework of gravity, we investigate whether spatial curvature can be made dynamically invisible in the cosmological background equations. We consider open spatial se…
Odd-Parity Perturbations of Geometrically Regular Black Holes with Hedgehog Scalar Hair
G. G. L. Nashed
In this paper, we study linear perturbations of a geometrically regular black hole supported by a constrained scalar triplet in the hedgehog configuration. Since t…
Late-Time Cosmological Tests of a Minisuperspace Generalized-Uncertainty-Principle Deformation
G. G. L. Nashed
The investigation of possible quantum-gravity effects in cosmology is of considerable interest, especially when such effects can be tested against observations of the late-time exp…
Effective Constrained Scalar--Gauss--Bonnet Inflation Motivated by Gravity
G. G. L. Nashed, Sudan Hansraj, Amare Abebe
We develop an effective framework for inflation in a constrained scalar--Gauss--Bonnet theory motivated by a restricted sector of gravity. Using unified parametr…
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…
Photon Sphere and Shadow of a Perturbative Black Hole in Gravity
G. G. L. Nashed
We investigate the impact of higher-curvature corrections on black-hole observables within a perturbative gravity framework. Working in a static, spherically symmetric sp…