Superheavy dark matter

Details Superheavy dark matter Superheavy dark matter

1998-02-05

arxiv.org/abs/hep-ph/9802238v2

Phys.Rev. D59 (1999) 023501

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 page LaTeX file with 2 PostScript figures included with epsf. Error in appendix corrected. No change in conclusions or nume

Scientific paper

10.1103/PhysRevD.59.023501

We show that in large-field inflationary scenarios, superheavy (many orders of magnitude larger than the weak scale) dark matter will be produced in cosmologically interesting quantities if superheavy stable particles exist in the mass spectrum. We show that these particles may be produced naturally during the transition from the inflationary phase to either a matter-dominated or radiation-dominated phase as a result of the expansion of the background spacetime acting on vacuum quantum fluctuations of the dark matter field. We find that as long as there are stable particles whose mass is of the order of the inflaton mass (presumably around $10^{13}$GeV), they will be produced in sufficient abundance to give $\Omega_0 =1$ quite independently of any details of the non-gravitational interactions of the dark-matter field.

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