Standard Cosmology from Sigma-Model

Abstract

We investigate (4+1)- and (5+0)-dimensional gravity coupled to a non-compact scalar field sigma-model and a perfect fluid within the context of the Randall-Sundrum scenario. We find cosmological solutions with a rolling fifth radius and a family of warp factors. Included in this family are both the original Randall-Sundrum solution and the self-tuning solution of Kachru, Schulz and Silverstein. Our solutions exhibit conventional cosmology.

11 pages, 1 figure, LaTeX; references added, version to appear in Phys. Lett. B

References in corpus (4)

• An Alternative to Compactification
• Cosmology of One Extra Dimension with Localized Gravity
• Dynamic Dilatonic Domain Walls
• Cosmological 3-Brane Solutions

Cited by in corpus (6)

• 5-Dimensional Warped Cosmological Solutions With Radius Stabilization by a Bulk Scalar
• Vacuum Brane and the Bulk Dynamics in Dilatonic Brane World
• Comments on Brane World Cosmology
• Constraints on brane and bulk ideal fluid in Randall-Sundrum cosmologies
• Bouncing Branes
• Standard Cosmology on a Self-Tuning Domain Wall