Non-minimal coupling of the phantom field and cosmic acceleration

TL;DR

This paper explores how non-minimal coupling of phantom fields to gravity influences cosmic acceleration, deriving conditions for acceleration and superacceleration in the universe.

Contribution

It provides new necessary conditions for cosmic acceleration considering non-minimal coupling of phantom fields and baryonic matter.

Findings

Conditions for acceleration and superacceleration derived

Necessary condition for acceleration with non-minimal coupling and baryonic matter

Insights into phantom field behavior in cosmological models

Abstract

Motivated by the recent interest in phantom fields as candidates for the dark energy component, we investigate the consequences of the phantom field when is minimally coupled to gravity. In particular, the necessary (but insufficient) conditions for the acceleration and superacceleration of the universe are obtained when the non-minimal coupling term is taken into account. Furthermore, the necessary condition for the cosmic acceleration is derived when the phantom field is non-minimally coupled to gravity and baryonic matter is included.