| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1852198 | Physics Letters B | 2008 | 5 Pages |
Abstract
We investigate the possibility that both the baryon asymmetry of the universe and the observed cold dark matter density are generated by decays of a heavy scalar field which dominates the universe before nucleosynthesis. Since baryons and cold dark matter have common origin, this mechanism yields a natural explanation of the similarity of the corresponding energy densities. The cosmological moduli and gravitino problems are avoided.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Ryuichiro Kitano, Hitoshi Murayama, Michael Ratz,