Entropy perturbations in quartessence Chaplygin models
Astrophysics
2009-11-07 v2
Abstract
We show that entropy perturbations can eliminate instabilities and oscillations, in the mass power spectrum of the quartessence Chaplygin models. Our results enlarge the current parameter space of models compatible with large scale structure and cosmic microwave background (CMB) observations.
Cite
@article{arxiv.astro-ph/0306004,
title = {Entropy perturbations in quartessence Chaplygin models},
author = {R. R. R. Reis and I. Waga and M. O. Calvao and S. E. Joras},
journal= {arXiv preprint arXiv:astro-ph/0306004},
year = {2009}
}
Comments
references added, one figure corrected, results unchanged