Cosmic voids and the kinetic analysis. IV. Hubble tension and the cosmological constant

TL;DR

This paper explores how the cosmological constant influences cosmic structure formation and offers a kinetic approach to address the Hubble tension by incorporating a repulsive gravitational potential.

Contribution

It introduces a Vlasov kinetic model with a repulsive cosmological constant term to explain late Universe structure formation and resolve the Hubble tension.

Findings

The model explains the formation of voids and walls as semi-periodic structures.

It suggests the cosmological constant acts as a scaling factor in structure formation.

The approach aligns with observational data for specific cosmic regions.

Abstract

The formation of the cosmic structures in the late Universe is considered using Vlasov kinetic approach. The crucial point is the use of the gravitational potential with repulsive term of the cosmological constant which provides a solution to the Hubble tension, that is the Hubble parameter for the late Universe has to differ from its global cosmological value. This also provides a mechanism of formation of stationary semi-periodic gravitating structures of voids and walls, so that the cosmological constant has a role of the scaling and hence can be compared with the observational data for given regions. The considered mechanism of the structure formation in late cosmological epoch then is succeeding the epoch described by the evolution of primordial density fluctuations.