Parameterization and Reconstruction of Quasi Static Universe

TL;DR

This paper explores the potential future of the universe becoming quasi static without ending in a rip or endless expansion, using parameterization and scalar field models aligned with current observations.

Contribution

It introduces a parameterization and reconstruction method for modeling a quasi static universe, a novel scenario in cosmological evolution.

Findings

The universe could become quasi static within 20 billion years.

The model aligns with current observational data.

It provides a new framework for understanding long-term cosmic evolution.

Abstract

We study a possibility of the fate of universe, in which there is neither the rip singularity, which results in the disintegration of bound systems, nor the endless expansion, instead the universe will be quasi static. We discuss the parameterization of the corresponding evolution and the reconstruction of the scalar field model. We find, with the parameterization consistent with the current observation, that the current universe might arrive at a quasi static phase after less than 20Gyr.