Comments on brane world cosmology

Authors
Anchordoqui, L Olsen, K
Citation
L. Anchordoqui et K. Olsen, Comments on brane world cosmology, MOD PHY L A, 16(18), 2001, pp. 1157-1169
Citations number
100
Categorie Soggetti
Physics
Journal title
MODERN PHYSICS LETTERS A
ISSN journal
02177323 → ACNP
Volume
16
Issue
18
Year of publication
2001
Pages
1157 - 1169
Database
ISI
SICI code
0217-7323(20010614)16:18<1157:COBWC>2.0.ZU;2-5
Abstract
In this letter we consider some constraints on brane-world cosmologies. In the first part we analyze different behaviors for the expansion of our univ erse by imposing constraints on the speed of sound. In the second part, we study the nature of matter on the brane world by means of the well-known en ergy conditions. We find that the strong energy condition must be completel y violated at late stages of the universe.