2001/08/31 by Kari Enqvist, H. Kurki‐Suonio, Hannu Kurki-Suonio +2 · 1 citation
Physics and Astronomy · #Adiabatic process #Astrophysics #Big Bang nucleosynthesis #Black Holes and Theoretical Physics #Cold dark matter #Computer science #Cosmic microwave background #Cosmology #Cosmology and Gravitation Theories #Dark matter #Maxima and minima #Nucleosynthesis #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Scale (ratio) #Space (punctuation) #Statistics #Supernova #Theoretical physics #astro-ph #hep-ph
paper · pdf · doi:10.1103/physrevd.65.043002
published as Phys.Rev.D65:043002,2002 · 6 pages, 6 figures. V2: Added a discussion of the effect of curvature scale on the primordial power spectrum and made minor changes to match better the Phys. Rev. D 65, 0230XX (2002)
arxiv created 2001/12/07 · openalex publication_date 2002/01/11 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider pure isocurvature cold dark matter models in the case of open and closed universes. We allow for a large spectral tilt and scan the six-dimensional parameter space for the best fit to the COBE, Boomerang, and Maxima-1 data. Taking into account constraints from large-scale structure and big bang nucleosynthesis, we find a best fit with \ensuremathχ2=121, which is to be compared to \ensuremathχ2=44 of a flat adiabatic reference model. Hence the current data strongly disfavor pure isocurvature perturbations.