Energy-Momentum Squared Gravity: A Brief Overview

RAC Cipriano, N Ganiyeva, T Harko, FSN Lobo… - arxiv preprint arxiv …, 2024 - arxiv.org
In this work, we present a review of Energy-Momentum Squared Gravity (EMSG)--more
specifically, $ f (R, T_ {\mu\nu} T^{\mu\nu}) $ gravity, where $ R $ represents the Ricci scalar …

Light bending and gravitational lensing in energy-momentum-squared gravity

E Nazari - Physical Review D, 2022 - APS
In the present work, we derive the motion of light in the weak-field limit of energy-momentum-
squared gravity (EMSG). To do so, we introduce the post-Newtonian expansion of this …

Cosmological models in scale-independent energy-momentum squared gravity

Ö Akarsu, NM Uzun - Physics of the Dark Universe, 2023 - Elsevier
Scale-independent EMSG is a particular model of energy–momentum squared gravity
(EMSG) in which the new terms in the Einstein field equations arising from the EMSG theory …

Shadow behavior of an EMSG charged black hole

F Aliyan, K Nozari - Physics of the Dark Universe, 2024 - Elsevier
Recent shadow images of Sgr A* and M87* captured by Event Horizon Telescope (EHT)
collaboration confirm the existence of black holes or their possible alternatives in the center …

Evolution of spherical overdensities in energy-momentum-squared gravity

B Farsi, A Sheykhi, M Khodadi - Physical Review D, 2023 - APS
Employing the spherical collapse formalism, we investigate the linear evolution of the matter
overdensity for energy-momentum-squared gravity (EMSG), which in practical …

Relativistic structure of charged quark stars in energy–momentum squared gravity

JMZ Pretel, T Tangphati, A Banerjee - Annals of Physics, 2023 - Elsevier
Within the context of energy–momentum squared gravity (EMSG), where non-linear matter
contributions appear in the gravitational action, we derive the modified TOV equations …

Equivalence of matter-type modified gravity theories to general relativity with nonminimal matter interaction

Ö Akarsu, M Bouhmadi-López, N Katırcı, E Nazari… - Physical Review D, 2024 - APS
In this study, we first establish that gravity models incorporating matter-related terms, such as
f (L m), f (g μ ν T μ ν), and f (T μ ν T μ ν), into the usual matter Lagrangian density L m, are …

T2-inflation: Sourced by energy–momentum squared gravity

SAH Mansoori, F Felegary, M Roshan, Ö Akarsu… - Physics of the Dark …, 2023 - Elsevier
In this paper, we examine chaotic inflation within the context of the energy–momentum
squared gravity (EMSG) focusing on the energy–momentum powered gravity (EMPG) that …

Impact of modified gravity theory on neutron star and nuclear matter properties

N Alam, S Pal, A Rahmansyah, A Sulaksono - Physical Review D, 2024 - APS
New observational data measured with high degree of accuracy of compact isolated neutron
stars and binary stars in gravitational wave remnants have the potential to explore the strong …

Quadratic energy–momentum squared gravity: Constraints from big bang nucleosynthesis

Ö Akarsu, M Bouhmadi-López, N Katırcı… - Physics of the Dark …, 2024 - Elsevier
In this work, we extend the standard cosmological model within the quadratic energy–
momentum squared gravity (qEMSG) framework, introducing a nonminimal interaction …