Brane-cosmology dynamics with induced gravity

TL;DR

This paper analyzes the effects of induced gravity on brane cosmology, showing how it modifies late-universe dynamics and can contribute to cosmic acceleration, with comparisons to standard and Randall-Sundrum models.

Contribution

It provides a detailed analysis of brane cosmology with induced gravity, highlighting its impact on late-universe evolution and acceleration, which is a novel extension of existing models.

Findings

Induced gravity influences late-time cosmic acceleration.

Randall-Sundrum gravity affects early universe dynamics.

Conditions for late-universe acceleration due to induced gravity are identified.

Abstract

The Friedmann equations for a brane with induced gravity are analyzed and compared with the standard general relativity and Randall-Sundrum cases. Randall-Sundrum gravity modified the early universe dynamics, whereas induced gravity changes the late universe evolution. The early and late time limits are investigated. Induced gravity effects can contribute to late-universe acceleration. This conditions for this are found. Qualitative analysis is given for a range of scalar field potentials.