A late time acceleration of the universe with two scalar fields : many possibilities
Narayan Banerjee, Sudipta Das
TL;DR
This paper explores how two interacting scalar fields, including Brans-Dicke and quintessence, can explain the universe's late-time acceleration by analyzing their dynamic conditions.
Contribution
It introduces a model with two scalar fields to account for cosmic acceleration, detailing conditions for the quintessence field's oscillation and growth over time.
Findings
Quintessence field oscillates early and grows later to drive acceleration
Conditions for scalar field behavior are derived
Model provides a potential explanation for late-time cosmic acceleration
Abstract
In the present work, an attempt has been made to explain the recent cosmic acceleration with two mutually interacting scalar fields, one being the Brans-Dicke scalar field and the other a quintessence scalar field. Conditions have been derived for which the quintessence scalar field has an early oscillation and it grows during a later time to govern the dynamics of the universe.
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