Dark Energy in Chains
天体物理学
2007-05-23 v1
摘要
Dark energy affects the CMB through its perturbations and affects both CMB and Sn-Ia through its background evolution. Using recent CMB and Sn-Ia data sets, together with the most general parameterization of the dark energy equation of state available, we find that today w < -0.8 (2 sigma). We also find that the value of the normalization of the power spectrum on cluster scales, sigma8, can be used to discriminate between dynamical models of dark energy (Quintessence models) and a cosmological constant model (Lambda CDM).
引用
@article{arxiv.astro-ph/0406018,
title = {Dark Energy in Chains},
author = {David Parkinson and Bruce A. Bassett and Edmund J. Copeland and Pier-Stefano Corasaniti and Martin Kunz},
journal= {arXiv preprint arXiv:astro-ph/0406018},
year = {2007}
}
备注
4 pages, to be published in the Proceedings of the XXXIX Rencontres de Moriond 'Exploring the Universe'