Cosmic screening of the gravitational interaction

Abstract

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 perturbation theory in the weak gravity limit around a spatially flat Friedmann universe. Our approach works at all cosmic scales and incorporates linear and nonlinear effects with respect to energy density fluctuations. The gravitational potential can be split into individual contributions from each matter source. Each potential is characterized by a Yukawa interaction with the same range, which is of the order of 3700 Mpc at the present time. The derived equations can form the theoretical basis for numerical simulations for a wide class of modern cosmological models.

arXiv commentThis essay received an Honorable Mention in the 2017 Essay Competition of the Gravity Research Foundation

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• First-order Cosmological Perturbations Engendered by Point-like Masses
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Cited by in corpus (16)

• Duel of cosmological screening lengths
• Re-Examining the Evidence of the Hercules-Corona-Borealis Great Wall
• Effect of the spatial curvature of the Universe on the form of the gravitational potential
• Scalar perturbations in cosmological $f(R)$ models: the cosmic screening approach
• Analytic expressions for the second-order scalar perturbations in the $\Lambda$CDM Universe within the cosmic screening approach
• Cosmological screening and the phantom braneworld model
• Screening vs. gevolution: in chase of a perfect cosmological simulation code
• Gravitational Interaction in the Chimney Lattice Universe
• Scalar and vector perturbations in a universe with nonlinear perfect fluid
• Effect of peculiar velocities on the gravitational potential in cosmological models with perfect fluids
• Cosmological Perturbations Engendered by Discrete Relativistic Species
• Gravitational potentials and forces in the Lattice Universe: a slab
• Suppression of matter density growth at scales exceeding the cosmic screening length
• Backreaction in cosmic screening approach
• Effect of the cubic torus topology on cosmological perturbations
• Effect of medium on fundamental interactions in gravity and condensed matter