Scalar field models for an accelerating universe
Astrophysics
2007-05-23 v1 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
I describe a new class of quintessence+CDM models in which late time scalar field oscillations can give rise to both quintessence and cold dark matter. Additionally, a versatile ansatz for the luminosity distance is used to reconstruct the quintessence equation of state in a model independent manner from observations of high redshift supernovae.
Keywords
Cite
@article{arxiv.astro-ph/0101016,
title = {Scalar field models for an accelerating universe},
author = {Varun Sahni},
journal= {arXiv preprint arXiv:astro-ph/0101016},
year = {2007}
}
Comments
4 pages, 2 figures. To appear in Proceedings of IAU Symposium 201, `New Cosmological Data and the Values of the Fundamental Parameters', Manchester, U.K., August 2000, eds. A.N. Lasenby and A. Wilkinson, Publications of the Astronomy Society of the Pacific