2001/05/16 by Masahiro Kawasaki, Takeo Moroi, Tomo Takahashi
Physics and Astronomy · #Advanced Differential Geometry Research #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph #hep-ph
paper · pdf · doi:10.1103/physrevd.64.083009
published as Phys.Rev. D64 (2001) 083009 · 21 pages, 9 figures
arxiv created 2001/05/16 · openalex publication_date 2001/09/26 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study the cosmic microwave background (CMB) anisotropies produced by cosine-type quintessence models. In our analysis, the effects of the adiabatic and isocurvature fluctuations are both taken into account. For purely adiabatic fluctuations with a scale invariant spectrum, we obtain a stringent constraint on the model parameters using the CMB data from COBE, BOOMERanG, and MAXIMA. Furthermore, it is shown that isocurvature fluctuations have significant effects on the CMB angular power spectrum at low multipoles in some parameter space, which may be detectable in future satellite experiments. Such a signal may be used to test the cosine-type quintessence models.