Duel of cosmological screening lengths

@article{Canay2020DuelOC,
  title={Duel of cosmological screening lengths},
  author={Ezgi Canay and Maxim Eingorn},
  journal={Physics of the Dark Universe},
  year={2020}
}

Figures from this paper

Cosmological Perturbations Engendered by Discrete Relativistic Species

Within the extension of the ΛCDM model, allowing for the presence of neutrinos or warm dark matter, we develop the analytical cosmological perturbation theory. It covers all spatial scales where the

Gravitational Interaction in the Chimney Lattice Universe

We investigate the influence of the chimney topology T×T×R of the Universe on the gravitational potential and force that are generated by point-like massive bodies. We obtain three distinct

Yukawa vs. Newton: gravitational forces in a cubic cosmological simulation box

. We study the behaviour of Yukawa and Newtonian gravitational forces in a cubic box with fully periodic boundaries commonly encountered in N-body simulations of the structure formation. Placing a

Gravitational potentials and forces in the Lattice Universe: a slab

We study the effect of the slab topology $$T\times R\times R$$ of the Universe on the form of gravitational potentials and forces created by point-like masses. We obtain two alternative forms of

Effect of the Cubic Torus Topology on Cosmological Perturbations

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 the solution for

Gravitation in the Space with Chimney Topology

Searching for possible indicators of spatial topology of the Universe in the Cosmic Microwave Background data, one recognizes a quite promising interpretation which suggests that the shape of the

Scalar and vector perturbations in a universe with nonlinear perfect fluid

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 equations of state.

Effect of Medium on Fundamental Interactions in Gravity and Condensed Matter

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 demonstrate that there is a

References

SHOWING 1-10 OF 38 REFERENCES

Cosmological law of universal gravitation

Without exceeding the limits of the conventional $\Lambda$CDM paradigm, we argue for Yukawa law of interparticle interaction as the law of gravitation in the real expanding inhomogeneous Universe. It

Cosmic screening of the gravitational interaction

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 first-order scalar

Second-order Cosmological Perturbations Engendered by Point-like Masses

In the ΛCDM framework, presenting nonrelativistic matter inhomogeneities as discrete massive particles, we develop the second‐order cosmological perturbation theory. Our approach relies on the weak

General relativistic screening in cosmological simulations

We revisit the issue of interpreting the results of large volume cosmological simulations in the context of large scale general relativistic effects. We look for simple modifications to the nonlinear

Non-Newtonian potential involving Hubble's length

To limit gravitational effects of a point mass beyond its causal sphere, a non-Newtonian potential is proposed with an exponential attenuation factor that depends on Hubble's length. Potentials

Scalar perturbations in cosmological f(R) models: the cosmic screening approach

We investigate cosmological perturbations for nonlinear f(R) models within the cosmic screening approach. Matter is considered both in the form of a set of discrete point-like massive bodies and in

Effect of the spatial curvature of the Universe on the form of the gravitational potential

Within the cosmic screening approach, we obtain the exact formulas for the velocity-independent gravitational potentials produced by matter in the form of discrete sources distributed in the open and