Scalar field models for an accelerating universe

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.

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

References in corpus (4)

• The Case for a Positive Cosmological Lambda-term
• Cosmology and the Fate of Dilatation Symmetry
• Reconstructing the Cosmic Equation of State from Supernova distances
• The Robustness of Quintessence

Cited by in corpus (1)

• New parameterizations of generalized Chaplygin gas model constrained at background and perturbation levels