Transient chaos in scalar field cosmology on a brane

TL;DR

This paper investigates how negative dark radiation in brane cosmology can induce chaotic dynamics similar to closed universe models with scalar fields, revealing complex behaviors in such cosmological scenarios.

Contribution

It demonstrates that dark radiation can mimic spatial curvature and lead to chaos in scalar field brane cosmology, a novel insight into brane-world dynamics.

Findings

Dark radiation can mimic spatial curvature effects.

Chaotic behavior can arise in flat brane models due to dark radiation.

Scalar field dynamics exhibit chaos similar to closed universe models.

Abstract

We study cosmological dynamics of a flat Randall-Sundrum brane with a scalar field and a negative "dark radiation" term. It is shown that in some situations the "dark radiation" can mimic spatial curvature and cause a chaotic behavior which is similar to chaotic dynamics in closed Universe with a scalar field.