On the gravitational production of superheavy dark matter

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dc.creatorChung, Daniel J. H.
dc.creatorCrotty, Patrick
dc.creatorKolb, Edward W.
dc.creatorRiotto, Antonio
dc.date2001-04-10
dc.date2001-04-11
dc.date.accessioned2026-07-07T11:31:05Z
dc.date.available2026-07-07T11:31:05Z
dc.descriptionThe dark matter in the universe can be in the form of a superheavy matter species (WIMPZILLA). Several mechanisms have been proposed for the production of WIMPZILLA particles during or immediately following the inflationary epoch. Perhaps the most attractive mechanism is through gravitational particle production, where particles are produced simply as a result of the expansion of the universe. In this paper we present a detailed numerical calculation of WIMPZILLA gravitational production in hybrid-inflation models and natural-inflation models. Generalizing these findings, we also explore the dependence of the gravitational production mechanism on various models of inflation. We show that superheavy dark matter production seems to be robust, with Omega_X h^2 ~ (M_X / (10^11 GeV))^2 (T_RH / (10^9 GeV)), so long as M_X < H_I, where M_X is the WIMPZILLA mass, T_RH is the reheat temperature, and H_I is the expansion rate of the universe during inflation.
dc.description26 pages, 7 figures; LaTeX; submitted to Physical Review D; minor typographical error corrected
dc.identifierhttps://arxiv.org/abs/hep-ph/0104100
dc.identifierhttp://arxiv.org/abs/hep-ph/0104100
dc.identifierPhys.Rev.D64:043503,2001
dc.identifierdoi:10.1103/PhysRevD.64.043503
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/197159
dc.subjectHigh Energy Physics - Phenomenology
dc.titleOn the gravitational production of superheavy dark matter
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