| Issue |
A&A
Volume 452, Number 3, June IV 2006
|
|
|---|---|---|
| Page(s) | 781 - 794 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20054154 | |
| Published online | 06 June 2006 | |
Branes: cosmological surprise and observational deception
1
School of Mathematical Science, Queen Mary University of London, Mile End road, London E1 4NS, UK
2
Laboratoire Univers et Théories (LUTH), UMR 8102, Observatoire de Paris, 92195 Meudon Cedex, France e-mail: steph.fay@gmail.com
Received:
5
September
2005
Accepted:
5
January
2006
Using some supernovae and CMB data, we constrain the Cardassian, Randall-Sundrum, and Dvali-Gabadadze-Porrati brane-inspired cosmological models. We show that a transient acceleration and an early loitering period are usually excluded by the data. Moreover, the three models are equivalent to some usual quintessence/ghost dark energy models defined by a barotropic index 
depending on the redshift. We calculate this index for each model and show that they mimic a universe close to a 
model today.
Key words: cosmological parameters / dark matter
© ESO, 2006
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