A Non-thermal WIMP Miracle

Details A Non-thermal WIMP Miracle A Non-thermal WIMP Miracle

2009-08-17

arxiv.org/abs/0908.2430v2

Phys.Rev.D80:083529,2009

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

6 pages, no figures, References added, minor errors corrected

Scientific paper

10.1103/PhysRevD.80.083529

Light scalar fields with only gravitational strength couplings are typically present in UV complete theories of physics beyond the Standard Model. In the early universe it is natural for these fields to dominate the energy density, and their subsequent decay, if prior to BBN, will typically yield some dark matter particles in their decay products. In this paper we make the observation that a Non-thermal WIMP `Miracle' may result: that is, in the simplest solution to the cosmological moduli problem, non-thermally produced WIMPs can naturally account for the observed dark matter relic density. Such a solution may be generic in string theory compactifications.

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