Notes on teleparallel cosmology with nonminimally coupled scalar field
H. Mohseni Sadjadi
TL;DR
This paper explores teleparallel gravity with a nonminimally coupled scalar field in a flat universe, analyzing conditions for a transition from quintessence to phantom dark energy phases.
Contribution
It provides an analytical solution for the scalar field and discusses the necessary conditions for the universe to transition between dark energy phases in this model.
Findings
Analytical scalar field solution derived.
Conditions for quintessence to phantom transition identified.
Implications for dark energy evolution discussed.
Abstract
We consider the spatially flat Friedmann-Lemaitre-Robertson-Walker space time in the teleparallel model of gravity and assume that the universe is filled nearly by cold dark matter and a nonminimally coupled scalar field with a power-law potential as dark energy. We investigate the possibility that the universe undergoes a transition from quintessence to phantom phase. An analytical solution for the scalar field is obtained and necessary conditions required for such a transition are discussed.
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