f (Q, T) gravity models with observational constraints

S Arora, SKJ Pacif, S Bhattacharjee… - Physics of the Dark …, 2020 - Elsevier
The paper presents late time cosmology in f (Q, T) gravity where the dark energy is purely
geometric in nature. We start by employing a well motivated f (Q, T) gravity model, f (Q, T)= m …

Inflation in f(RT) gravity

S Bhattacharjee, JRL Santos, P Moraes… - The European Physical …, 2020 - Springer
The article presents modeling of inflationary scenarios for the first time in the f (R, T) theory of
gravity. We assume the f (R, T) functional form to be R+ η T R+ η T, where R denotes the …

DHOST bounce

A Ilyas, M Zhu, Y Zheng, YF Cai… - Journal of Cosmology …, 2020 - iopscience.iop.org
We present a new class of nonsingular bounce cosmology free from instabilities, using a
single scalar field coupled to gravity within the framework of the Degenerate Higher-Order …

Stability analysis of axial geometry with anisotropic background in gravity

MZ Bhatti, Z Yousaf, M Yousaf - Modern Physics Letters A, 2023 - World Scientific
In this paper, we highlight the variables preserving stability of a very restricted class of
anisotropic axial symmetrical compact geometry in the scenario of f (R, T) gravity, where T …

Swampland dS conjecture in mimetic f (R, T) gravity

SN Gashti, J Sadeghi, S Upadhyay… - … in Theoretical Physics, 2022 - iopscience.iop.org
In this paper, we study a theory of gravity called mimetic f (R, T) in the presence of
swampland dS conjecture. For this purpose, we introduce several inflation solutions of the …

Cosmographic analysis of a closed bouncing universe with the varying cosmological constant in f(RT) gravity

VK Bhardwaj, A Pradhan, N Ahmed… - Canadian Journal of …, 2022 - cdnsciencepub.com
Modelling of matter bounce in f (R, T) gravity has been presented with no violation of the null
energy condition. Only a closed universe with negative pressure is allowed in good …

Loop quantum cosmology: Physics of singularity resolution and its implications

BF Li, P Singh - Handbook of Quantum Gravity, 2023 - Springer
The occurrences of singularities where spacetime curvature becomes infinite and geodesic
evolution breaks down are inevitable events in classical general relativity (GR) unless one …

Dark energy nature in logarithmic cosmology

DC Maurya, J Singh, LK Gaur - International Journal of Geometric …, 2023 - World Scientific
This research paper is an investigation of dark energy nature of logarithmic f (R, T)-gravity
cosmology in a flat FLRW space–time universe. We have derived modified Einstein's field …

Energy conditions in non‐minimally coupled f(R, T) gravity

PK Sahoo, S Mandal, S Arora - Astronomische Nachrichten, 2021 - Wiley Online Library
In today's scenario, going beyond Einstein's theory of gravity leads us to some more
complete and modified gravity theories. One of them is the f (R, T) gravity in which R is the …

The bouncing cosmic behavior with logarithmic law f (G, T) model

Z Yousaf, MZ Bhatti, H Aman - Chinese Journal of Physics, 2022 - Elsevier
In this paper, we study the bouncing behavior of our universe under f (G, T) theory, by taking
Friedmann–Lemaître–Robertson–Walker metric, which is assumed to be coupled with an …