Cosmography in gravity

S Mandal, D Wang, PK Sahoo - Physical Review D, 2020 - APS
Cosmography is an ideal tool to investigate the cosmic expansion history of the Universe in
a model-independent way. The equations of motion in modified theories of gravity are …

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 …

Energy conditions in f (Q, T) gravity

S Arora, PK Sahoo - Physica Scripta, 2020 - iopscience.iop.org
The recently proposed f (Q, T) gravity (Xu et al 2019 Eur. Phys. J. C 79, 708) is an extension
of the symmetric teleparallel gravity. The gravitational action L is given by an arbitrary …

Bouncing behaviours in four dimensional Einstein Gauss-Bonnet gravity with cosmography and observational constraints

M Zubair, M Farooq - The European Physical Journal Plus, 2023 - Springer
This manuscript is based on an investigation of bouncing cosmology in a 4D Einstein Gauss-
Bonnet gravity. Various bouncing models such as symmetric bounce, matter bounce, super …

The effect of modified hybrid and logarithmic teleparallel gravity on the interior solutions of compact stars

A Ditta, X Tiecheng, G Mustafa, A Errehymy - The European Physical …, 2023 - Springer
This study aims to investigate spherically symmetric anisotropic solutions that describe
compact stellar objects in the modified Rastall teleparallel (MRT) theory of gravity. In order to …

[HTML][HTML] New emergent observational constraints in f (Q, T) gravity model

SH Shekh, A Bouali, A Pradhan, A Beesham - Journal of High Energy …, 2023 - Elsevier
In the current study, we inspect the late-time acceleration of the universe in f (Q, T) gravity. In
this theory, Q represents the non-metricity term and with T μ ν the energy-momentum tensor …

Late-time acceleration with a scalar field source: Observational constraints and statefinder diagnostics

SKJ Pacif, S Arora, PK Sahoo - Physics of the Dark Universe, 2021 - Elsevier
This article discusses a dark energy cosmological model in the standard theory of gravity-
general relativity with a broad scalar field as a source. Exact solutions of Einstein's field …

How a projectively flat geometry regulates F (R)-gravity theory?

TH Loo, A De, S Mandal, PK Sahoo - Physica Scripta, 2021 - iopscience.iop.org
In the present paper we examine a projectively flat spacetime solution of F (R)-gravity theory.
It is seen that once we deploy projective flatness in the geometry of the spacetime, the matter …

Cosmological implications of an interacting model of dark matter & dark energy

KR Mishra, SKJ Pacif, R Kumar, K Bamba - Physics of the Dark Universe, 2023 - Elsevier
In this paper, we have studied an interacting dark energy model. We have assumed the
gravitational interaction between the matter fields ie barotropic fluid and the dark energy …

Interacting Tsallis and Renyi holographic dark energy with hybrid expansion law

S Bhattacharjee - Astrophysics and Space Science, 2020 - Springer
The manuscript presents the dynamics of Tsallis holographic dark energy (THDE) and Rényi
holographic dark energy (RHDE) prescribed by a non-linear interaction in the FRW …