65 citations · 1k across the 83 of their papers we have counts for
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Suppression of matter density growth at scales exceeding the cosmic screening length
Maxim Eingorn, Ezgi Yilmaz, A. Emrah Yükselci +1
One of the main objectives of modern cosmology is to explain the origin and evolution of cosmic structures at different scales. The principal force responsible for the formation of…
Backreaction in cosmic screening approach
Maxim Eingorn, Brianna O'Briant, Adjaratou Diouf +1
We investigate the backreaction of nonlinear perturbations on the global evolution of the Universe within the cosmic screening approach. To this end, we have considered the second-…
Effect of medium on fundamental interactions in gravity and condensed matter
Alexander Zhuk, Valerii Shulga
Recently, it was shown that the gravitational field undergoes exponential cutoff at large cosmological scales due to the presence of background matter. In this article, we demonstr…
Effect of peculiar velocities of inhomogeneities on the shape of gravitational potential in spatially curved universe
Ezgi Canay, Maxim Eingorn, Andrew McLaughlin +2
We investigate the effect of peculiar velocities of inhomogeneities and the spatial curvature of the universe on the shape of the gravitational potential. To this end, we consider…
Gravitational potentials and forces in the Lattice Universe: a slab
M. Eingorn, N. O'Briant, K. Arzu +2
We study the effect of the slab topology of the Universe on the form of gravitational potentials and forces created by point-like masses. We obtain two alternat…
Gravitational Interaction in the Chimney Lattice Universe
Maxim Eingorn, Andrew McLaughlin, Ezgi Canay +2
We investigate the influence of the chimney topology of the Universe on the gravitational potential and force that are generated by point-like massive bodies. W…
Screening vs. gevolution: in chase of a perfect cosmological simulation code
Maxim Eingorn, A. Emrah Yukselci, Alexander Zhuk
We compare two competing relativistic approaches to the N-body simulation of the Universe large-scale structure. To this end, employing the corresponding alternative computer codes…
Effect of the cubic torus topology on cosmological perturbations
Maxim Eingorn, Ezgi Canay, Jacob M. Metcalf +2
We study the effect of the cubic torus topology of the Universe on scalar cosmological perturbations which define the gravitational potential. We obtain three alternative forms of…
Scalar and vector perturbations in a universe with nonlinear perfect fluid
Ezgi Canay, Ruslan Brilenkov, Maxim Eingorn +2
We study a three-component universe filled with dust-like matter in the form of discrete inhomogeneities (e.g., galaxies) and perfect fluids characterized by linear and nonlinear e…
Effect of peculiar velocities on the gravitational potential in cosmological models with perfect fluids
Alvina Burgazli, Valerii Shulga, A. Emrah Yükselci +1
We consider a universe filled with perfect fluid with the constant equation of state parameter . In the theory of scalar perturbations, we study the effect of peculiar velocitie…
Effects of nonlinearity of gravity and perfect fluid in Kaluza-Klein models with spherical compactification
Ezgi Canay, Maxim Eingorn, Alexander Zhuk
We study the effects associated with nonlinearity of gravity and of the background perfect fluid manifested in the Kaluza-Klein model with spherical compactification. The ba…
Weak-field limit of Kaluza-Klein model with non-linear perfect fluid
Ezgi Yalçınkaya, Alexander Zhuk
The main purpose of our paper is to construct a viable Kaluza-Klein model satisfying the observable constraints. To this end, we investigate the six-dimensional model with spherica…
Weak field limit of higher dimensional massive Brans-Dicke gravity: Observational constraints
Ozgur Akarsu, Alexey Chopovsky, Valerii Shulga +2
We consider higher-dimensional massive Brans-Dicke theory with Ricci-flat internal space. The background model is perturbed by a massive gravitating source which is pressureless in…
Analytic expressions for the second-order scalar perturbations in the CDM Universe within the cosmic screening approach
Maxim Eingorn, N. Duygu Guran, Alexander Zhuk
We study the second-order scalar perturbations in the conventional CDM Universe within the cosmic screening approach. The analytic expressions for both the velocity-independent…
Scalar perturbations in cosmological models: the cosmic screening approach
Ozgur Akarsu, Ruslan Brilenkov, Maxim Eingorn +2
We investigate cosmological perturbations for nonlinear models within the cosmic screening approach. Matter is considered both in the form of a set of discrete point-like ma…
Cosmic screening of the gravitational interaction
Maxim Eingorn, Claus Kiefer, Alexander Zhuk
We study a universe filled with cold dark matter in the form of discrete inhomogeneities (e.g., galaxies) and dark energy in the form of a continuous perfect fluid. We develop a fi…
Black branes and black strings in the astrophysical and cosmological context
Ozgur Akarsu, Alexey Chopovsky, Alexander Zhuk
We consider Kaluza-Klein models where internal spaces are compact flat or curved Einstein spaces. This background is perturbed by a compact gravitating body with the dust-like equa…
Brane world models with bulk perfect fluid and broken 4D Poincare invariance
Ozgur Akarsu, Alexey Chopovsky, Maxim Eingorn +2
We consider 5D brane world models with broken global 4D Poincar\a'{e} invariance (4D part of the spacetime metric is not conformal to the Minkowski spacetime). The bulk is filled w…
Weak-field limit of Kaluza-Klein models with spherically symmetric static scalar field: observational constraints
Alexander Zhuk, Alexey Chopovsky, Seyed Hossein Fakhr +2
In a multidimensional Kaluza-Klein model with Ricci-flat internal space, we study the gravitational field in the weak-field limit. This field is created by two coupled sources. Fir…
Scalar and vector perturbations in a universe with discrete and continuous matter sources
Maxim Eingorn, Claus Kiefer, Alexander Zhuk
We study a universe filled with dust-like matter in the form of discrete inhomogeneities (e.g., galaxies and their groups and clusters) and two sets of perfect fluids with linear a…
-essence model from the mechanical approach point of view: coupled scalar field and the late cosmic acceleration
Mariam Bouhmadi-López, K. Sravan Kumar, João Marto +2
In this paper, we consider the Universe at the late stage of its evolution and deep inside the cell of uniformity. At these scales, we can consider the Universe to be filled with d…
The late Universe with non-linear interaction in the dark sector: the coincidence problem
Mariam Bouhmadi-López, João Morais, Alexander Zhuk
We study the Universe at the late stage of its evolution and deep inside the cell of uniformity. At such a scale the Universe is highly inhomogeneous and filled with discretely dis…
Perfect fluids coupled to inhomogeneities in the late Universe
Alexander Zhuk
We consider the Universe at the late stage of its evolution and deep inside the cell of uniformity. At such scales, the Universe is highly inhomogeneous and is filled with inhomoge…
Coupled scalar fields in the late Universe: The mechanical approach and the late cosmic acceleration
Alvina Burgazli, Alexander Zhuk, João Morais +2
In this paper, we consider the Universe at the late stage of its evolution and deep inside the cell of uniformity. At these scales, we consider the Universe to be filled with dust-…