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Scalar Field Models for an Accelerating Universe

Published online by Cambridge University Press:  26 May 2016

Varun. Sahni
Varun. Sahni*
Affiliation:
Inter-University Centre for Astronomy & Astrophysics, Post Bag 4, Pune 411007, India

Abstract

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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.

Type
Part VII: Evidence for non-zero A
Information
Symposium - International Astronomical Union , Volume 201: New Cosmological Data and the Values of the Fundamental Parameters , 2005 , pp. 260 - 263
Copyright
Copyright © Astronomical Society of the Pacific 2005 

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