The universe dynamics in the tachyon cosmology with non-minimal coupling to matter

TL;DR

This paper explores a tachyon cosmology model with non-minimal matter coupling, demonstrating its ability to explain current cosmic acceleration and future phantom crossing, validated through cosmological tests.

Contribution

It introduces a novel tachyon cosmology model with non-minimal matter coupling that accounts for universe acceleration and phantom crossing, supported by observational tests.

Findings

Model explains current acceleration of the universe.

Predicts future phantom crossing.

Validated with distance modulus and CRD tests.

Abstract

Recently, the tachyon cosmology has been represented as dark energy model to support the current acceleration of the universe without phantom crossing. In this paper, we study the dynamics of the tachyon cosmology in which the field plays the role of tachyon field and also non--minimally coupled to the matter lagrangian. The model shows current universe acceleration and also phantom crossing in the future. Two cosmological tests are also performed to validate the model; the difference in the distance modulus and the model independent Cosmological Redshift Drift (CRD) test.