Decaying Cold Dark Matter Cosmology and CMB Anisotropies

Details Decaying Cold Dark Matter Cosmology and CMB Anisotropies Decaying Cold Dark Matter Cosmology and CMB Anisotropies

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005omeg.conf...33i&link_type=abstract

ORIGIN OF MATTER AND EVOLUTION OF GALAXIES 2003. Held 17-19 November 2003 in RIKEN, Wako, Saitama, Japan. Edited by M Terasawa,

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We re-formulate the theory of cosmological perturbations in decaying cold dark matter cosmology and calculate cosmological microwave background anisotropies. By comparing with recent observation we derive a new bound on the life time of such decaying particles. We show that the data of CMB anisotropies alone do not prefer the decaying cold dark matter models to the standard cold dark matter ones, and constrained to Г -1 ≥ 43 Gyr at 3σ.

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