Birla Institute of Technology and Science - Hyderabad Campus

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20102026

most citedNew Hyperon Equations of State for Supernovae and Neutron Stars in Density-dependent Hadron Field Theory

250 citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2020 · gr-qcShow all

19 papers · 2 filters

gr-qc2020★ 28 cited

Traversable wormholes in the traceless $f (R, T)$ gravity

Parbati Sahoo, P. H. R. S. Moraes, Marcelo M. Lapola +1

We present a traversable wormhole solution using the traceless $f (R, T)$ theory of gravity. In the $f (R, T)$ gravity, the Ricci scalar $R$ in the Einstein-Hilbert action is replaced…

gr-qc2020★ 186 cited

Cosmography in $f (Q)$ gravity

Sanjay Mandal, Deng Wang, P. K. Sahoo

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 usu…

gr-qc2020★ 70 cited

Energy conditions in $f (Q, T)$ gravity

Simran Arora, P. K. Sahoo

The recently proposed $f (Q, T)$ gravity (Xu et al. Eur. Phys. J. C \textbf{79} (2019) 708) is an extension of the symmetric teleparallel gravity. The gravitational action $L$ is gi…

gr-qc2020★ 18 cited

Cosmological models with squared trace in modified gravity

B. Mishra, S. K. Tripathy, Saibal Ray

In this work we present a few simple cosmological models under the modified theory of gravity in the particular form of $f (R, T) = R + 2 f (T)$ , where $R$ is the Ricci…

gr-qc2020★ 98 cited

Constraining $f (Q, T)$ gravity from energy conditions

Simran Arora, J. R. L. Santos, P. K. Sahoo

We are living in a golden age for experimental cosmology. New experiments with high accuracy precision are been used to constrain proposals of several theories of gravity, as it ha…

gr-qc2020★ 12 cited

Investigating the physical and geometrical parameters of the cosmological models with anisotropic background

B. Mishra, S. K. Tripathy

In this paper, we have investigated some accelerating cosmological models at the backdrop of an anisotropic metric in an extended gravity theory. Two viable cosmological models one…

gr-qc2020★ 231 cited

Energy Conditions in $f (Q)$ gravity

Sanjay Mandal, P. K. Sahoo, J. R. L. Santos

A complete theory of gravity impels us to go beyond Einstein's General Relativity. One promising approach lies in a new class of teleparallel theory of gravity named $f (Q)$ , where…

gr-qc2020★ 20 cited

Effective equation of state in modified gravity and observational constraints

Simran Arora, Xin-he Meng, S. K. J. Pacif +1

In this article, the bulk viscosity is introduced in a modified gravity model. The gravitational action has a general $f (R, T)$ form, where $R$ and $T$ are the curvature scalar an…

gr-qc2020★ 32 cited

Late-Time Viscous Cosmology in $f (R, T)$ Gravity

Simran Arora, Snehasish Bhattacharjee, P. K. Sahoo

The article communicates an alternative route to suffice the late-time acceleration considering a bulk viscous fluid with viscosity coefficient $ζ = ζ_{0} + ζ_{1} H + ζ_{2} H^{2}$ , wh…

gr-qc2020★ 127 cited

$f (Q, T)$ gravity models with observational constraints

Simran Arora, S. K. J. Pacif, Snehasish Bhattacharjee +1

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,…

gr-qc2020★ 66 cited

Inflation in $f (R, T)$ Gravity

Snehasish Bhattacharjee, J. R. L. Santos, P. H. R. S. Moraes +1

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 from to be $R + η T$ , where $R$ denot…

gr-qc2020★ 9 cited

Magnetized cosmological model with variable deceleration parameter

Sankarsan Tarai, Fakhereh Md. Esmaeili, B. Mishra +1

In this paper, we have derived the field equations in an extended theory of gravity in an anisotropic space time background and in the presence of magnetic field. The physical and…

gr-qc2020★ 17 cited

Redshift Drift in $f (R, T)$ Gravity

Snehasish Bhattacharjee, P. K. Sahoo

Redshift drift refers to the phenomena that redshift of cosmic objects is a function of time. Measurement of redshift drift is of fundamental importance in physical cosmology and c…

gr-qc2020★ 52 cited

Gravastar under the framework of Braneworld Gravity

Rikpratik Sengupta, Shounak Ghosh, Saibal Ray +2

Gravastars have been considered as a serious alternative to black holes in the past couple of decades. Stable models of gravastar have been constructed in many of the alternate gra…

gr-qc2020★ 26 cited

Unified Dark Fluid and Cosmic Transit Models in Brans-Dicke Theory

S. K. Tripathy, Sasmita K Pradhan, Z. Naik +2

Some dark energy cosmological models are constructed in the framework of a generalised Brans-Dicke theory which contains a self interacting potential and a dynamical coupling param…

gr-qc2020★ 61 cited

Comprehensive Analysis of a Non-Singular Bounce in $f (R, T)$ Gravitation

Snehasish Bhattacharjee, P. K. Sahoo

The present paper is devoted to the study of bouncing cosmology in $f (R, T)$ modified gravity where we presume $f (R, T) = R + 2 λ T$ , with $R$ the Ricci scalar, $T$ the trace of energ…

gr-qc2020★ 4 cited

Localization of Energy and Momentum in an Asymptotically Reissner-Nordström Non-singular Black Hole Space-time Geometry

I. Radinschi, P. K. Sahoo, Th. Grammenos +2

The space-time geometry exterior to a new four-dimensional, spherically symmetric and charged black hole solution that, through a coupling of general relativity with a non-linear e…

gr-qc2020★ 39 cited

Bouncing Models in an Extended Gravity Theory

S K Tripathy, B Mishra, Saibal Ray +1

Some bouncing models are investigated in the framework of an extended theory of gravity. The extended gravity model is a simple extension of the General Relativity where an additio…

gr-qc2020★ 32 cited

Temporally Varying Universal Gravitational "Constant" and Speed of Light in Energy Momentum Squared Gravity

S. Bhattacharjee, P. K. Sahoo

Energy Momentum Squared Gravity (EMSG) is a cosmological model where the scale factor is non vanishing at all times and hence does not favor big bang cosmology. However, the profil…

Traversable wormholes in the traceless f(R,T) gravity

Cosmography in f(Q) gravity

Energy conditions in f(Q,T) gravity