70 citations · 171 across the 9 of their papers we have counts for
10 papers
Equivalence of matter-type modified gravity theories to general relativity with nonminimal matter interaction
Özgür Akarsu, Mariam Bouhmadi-López, Nihan Katırcı +3
In this study, we first establish that gravity models incorporating matter-related terms, such as , , and , into the usu…
Cosmological models in scale-independent energy-momentum squared gravity
Ozgur Akarsu, N. Merve Uzun
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 enter wit…
Weak field and slow motion limits in energy-momentum powered gravity
Ozgur Akarsu, A. Kazim Camlibel, Nihan Katirci +2
We explore the weak field and slow motion limits, Newtonian and Post-Newtonian limits, of the energy-momentum powered gravity (EMPG), viz., the energy-momentum squared gravity (EMS…
Symplectic evolution of an observed light bundle
Nezihe Uzun
Each and every observational information we obtain from the sky regarding the brightnesses, distances or image distortions resides on the deviation of a null geodesic bundle. In th…
Hydrodynamic interpretation of generic squeezed coherent states: A kinetic theory
Nezihe Uzun
The hydrodynamic interpretation of quantum mechanics treats a system of particles in an effective manner. In this work, we investigate squeezed coherent states within the hydrodyna…
Screening anisotropy via energy-momentum squared gravity: CDM model with hidden anisotropy
Ozgur Akarsu, John D. Barrow, N. Merve Uzun
We construct a generalization of the standard CDM model, wherein we simultaneously replace the spatially flat Robertson-Walker metric with its simplest anisotropic generalizatio…
Screening in a new modified gravity model
Ozgur Akarsu, John D. Barrow, Charles V. R. Board +2
We study a new model of Energy-Momentum Squared Gravity (EMSG), called Energy-Momentum Log Gravity (EMLG), constructed by the addition of the term $f(T_{μν}T^{μν})=α\ln(λ\,T_{μν}T^…
Reduced phase space optics for general relativity: Symplectic ray bundle transfer
Nezihe Uzun
In the paraxial regime of Newtonian optics, propagation of an ensemble of rays is represented by a symplectic ABCD transfer matrix defined on a reduced phase space. Here, we presen…
Quasilocal energy exchange and the null cone
Nezihe Uzun
Energy is at best defined quasilocally in general relativity. Quasilocal energy definitions depend on the conditions one imposes on the boundary Hamiltonian, i.e., how a finite reg…
Quasilocal energy and thermodynamic equilibrium conditions
Nezihe Uzun, David L. Wiltshire
Equilibrium thermodynamic laws are typically applied to horizons in general relativity without stating the conditions that bring them into equilibrium. We fill this gap by applying…