Bouncing Universe with a Nonminimally Coupled Scalar Field on a Moving Domain Wall

TL;DR

This paper investigates a nonminimally coupled scalar field on a moving domain wall to explain late-time cosmic acceleration, phantom divide crossing, and bouncing solutions, highlighting the model's potential in cosmological dynamics.

Contribution

It introduces a novel framework combining a nonminimally coupled scalar field with a moving domain wall to address key cosmological phenomena.

Findings

Model explains late-time acceleration with fine-tuning of coupling

Demonstrates crossing of the phantom divide line

Identifies conditions for bouncing solutions

Abstract

We study dynamics of a dark energy component nonminimally coupled to gravity on a moving domain wall. We use this setup to explain late-time accelerated expansion and crossing of the phantom divide line by the equation of state parameter of this non-minimally coupled dark energy component. By analyzing parameter space of the model, we show that this model accounts for accelerated expansion and crossing of the phantom divide line with a suitable fine-tuning of the nonminimal coupling. Then we study the issue of bouncing solutions in this framework.