Isocurvature Fluctuations in Tracker Quintessence Models

Preprint

6 August 2001

preprint
Published by arXiv in arXiv

Abstract

We consider the effects of the isocurvature perturbation in the tracker-type quintessence models. During the inflation, fluctuations in the amplitude of the quintessence field are generated, which provide isocurvature component of the cosmic density perturbation. Contrary to the conventional notion, it is shown that effects of the isocurvature fluctuation may become sizable in some case, and in particular, the cosmic microwave background angular power spectrum at low multipoles may be significantly enhanced due to the effect of the isocurvature mode. Such an enhancement may be detectable in the future satellite experiments.

Keywords

ISOCURVATURE FLUCTUATIONS
ISOCURVATURE PERTURBATION
TRACKER QUINTESSENCE
QUINTESSENCE MODELS
TRACKER TYPE
INFLATION
COSMIC

All Related Versions

Version 1, 2001-08-06, ArXiv
Version 2, 2001-08-22, ArXiv
Version 3, 2002-03-06, ArXiv
Published version: Physics Letters B, 533 (3-4), 294.

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