Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A

S Vagnozzi, R Roy, YD Tsai, L Visinelli… - … and Quantum Gravity, 2023 - iopscience.iop.org
Horizon-scale images of black holes (BHs) and their shadows have opened an
unprecedented window onto tests of gravity and fundamental physics in the strong-field …

Static traversable wormhole solutions in f (R, ℒm) gravity

NS Kavya, V Venkatesha, G Mustafa, PK Sahoo… - Chinese Journal of …, 2023 - Elsevier
In this study, we explore the new wormhole solutions in the framework of new modified f (R,
ℒ m) gravity. To obtain a characteristic wormhole solution, we use anisotropic matter …

Relativistic wormholes in extended teleparallel gravity with minimal matter coupling

G Mustafa, SK Maurya, I Hussain - Fortschritte der Physik, 2023 - Wiley Online Library
This study explores the wormhole solutions utilizing the notion of conformal symmetry in the
background of the f (τ, T) f(τ,T) gravity. The exact shape functions are calculated using the …

Developing a framework for understanding wormholes in modified gravity: A comprehensive review

J Kumar, SK Maurya, S Kiroriwal, S Chaudhary - New Astronomy Reviews, 2024 - Elsevier
Wormholes have captured the interest of scientists and readers of science fiction as a
fascinating possibility for traveling through huge cosmic distances or presumably enabling …

Klein–Gordon oscillator with scalar and vector potentials in topologically charged Ellis–Bronnikov-type wormhole

A Moussa, H Aounallah, P Rudra… - International Journal of …, 2023 - World Scientific
In this work, we study the Klein–Gordon oscillator with equal scalar and vector potentials in a
topologically charged Ellis–Bronnikov wormhole space-time background. The behaviour of …

Notes on further refining de Sitter swampland conjecture with inflationary models

J Sadeghi, SN Gashti, MR Alipour - Chinese Journal of Physics, 2022 - Elsevier
In this paper, we challenge some inflationary models with the recent new conjecture of the
swampland program, namely, further refining the de Sitter swampland conjecture. So far …

Cosmic Evolution of the Logarithmic f(R) Model and the dS Swampland Conjecture

J Sadeghi, B Pourhassan, S Noori Gashti… - Universe, 2022 - mdpi.com
In this paper, we study the inflationary scenario in logarithmic f (R) gravity, where the rate of
inflation roll is constant. On the other hand, our gravitational f (R) model is a polynomial plus …

Gravitation field perturbation quasinormal modes of a black hole in F (R) gravity

K Malekmakan, R Saffari, S Soroushfar… - … Physical Journal Plus, 2022 - epjplus.epj.org
The direct and historical observation of gravity resulting from the merger of black holes by
LIGO has opened a whole new window on the universe, allowing us to experiment with …

New wormhole shape functions in f (R, T) theory of gravity

SN Gashti, J Sadeghi - … Journal of Geometric Methods in Modern …, 2023 - World Scientific
In this paper, we introduce two new shape functions of wormholes in f (R, T) gravity. Both
shape functions are satisfied by various geometric conditions. We will also discuss the …

Evolving wormhole formation in dRGT massive gravity

A Dutta, D Roy, S Chakraborty - arXiv preprint arXiv:2410.04533, 2024 - arxiv.org
In this study, we have examined the evolving wormhole solution within Einstein-massive
gravity, considering traceless, barotropic, and anisotropic pressure fluids. We have …