The Cold Plus Hot Dark Matter Model From Supersymmetric Inflation

Details The Cold Plus Hot Dark Matter Model From Supersymmetric Inflation The Cold Plus Hot Dark Matter Model From Supersymmetric Inflation

1996-12-27

arxiv.org/abs/hep-ph/9612478v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages LaTEX, with two postscript figures. To appear in the Proceedings of the Dark Matter '96 meeting in Heldelberg, German

Scientific paper

The cold plus hot dark matter (CHDM) model is arguably the best theory we currently have for a consistent description of the observed large scale structure formation. This is especially true if the primordial density fluctuations are assumed to be essentially scale invariant, in which case a mixture with 20-25 % HDM, 5- 10 % baryons, and the rest in CDM correctly predicted (in 1989) the quadrupole anisotropy measured a few years later by the COBE satellite. After a brief historical introduction, we present a model of supersymmetric inflation in which the CHDM model is neatly realized with a spectral index n= 0.98, while the dark matter consists of a few eV `tau' neutrino and the LSP (essentially the `bino'). We also provide a comparison of this model against the observations.

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