Perfect fluids with $\omega =\mathrm{const}$ as sources of scalar cosmological perturbations

Abstract

We make a generalization of a self-consistent first-order perturbation scheme, being suitable for all (sub-horizon and super-horizon) scales, which has been recently constructed for the concordance cosmological model and discrete presentation of matter sources, to the case of extended models with extra perfect fluids and continuous presentation. Namely, we derive a single equation determining the scalar perturbation and covering the whole space as well as define the corresponding universal Yukawa interaction range. We also demonstrate explicitly that the structure growth is suppressed at distances exceeding this fundamental range.

14 pages, no figures

References in corpus (11)

• Planck 2015 results. XIII. Cosmological parameters
• A giant ring-like structure at 0.78<z<0.86 displayed by GRBs
• N-body methods for relativistic cosmology
• New data support the existence of the Hercules-Corona Borealis Great Wall
• First-order Cosmological Perturbations Engendered by Point-like Masses
• Dynamics of astrophysical objects against the cosmological background
• Hubble flows and gravitational potentials in observable Universe
• Scaling of cosmological domain wall networks with junctions
• Scalar and vector perturbations in a universe with discrete and continuous matter sources
• Second-order Cosmological Perturbations Engendered by Point-like Masses
• Cosmological law of universal gravitation

Cited by in corpus (14)

• Cosmic screening of the gravitational interaction
• Duel of cosmological screening lengths
• 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
• Cosmological screening and the phantom braneworld model
• Analytic expressions for the second-order scalar perturbations in the $\Lambda$CDM Universe within the cosmic screening approach
• Screening vs. gevolution: in chase of a perfect cosmological simulation code
• Effect of peculiar velocities on the gravitational potential in cosmological models with perfect fluids
• Scalar and vector perturbations in a universe with nonlinear perfect fluid
• Cosmological Perturbations Engendered by Discrete Relativistic Species
• Suppression of matter density growth at scales exceeding the cosmic screening length
• Effect of the cubic torus topology on cosmological perturbations
• Backreaction in cosmic screening approach
• Tracing Cosmological Signature with Doppler Lensing: Insights from Cosmological Simulations