Gravitational production of superheavy dark matter
By D. Chung, P. Crotty, E. Kolb, A. Riotto. 2001
201 citations recorded by the source corpus.
The 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}{sub X}h{sup 2}{approx}(M{sub X}/10{sup 11}GeV){sup 2}(T{sub RH}/10{sup 9}GeV), so long as M{sub X}<H{sub I}, where M{sub X} is the wimpzilla mass, T{sub RH} is the reheat temperature, and H{sub I} is the expansion rate of the universe during inflation.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/951884d75532e4990fa9c858bea2419e767011d8
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Astronomy and Astrophysics
In Nuclear and High Energy Physics
Citations in the corpus
- Dark matter models and direct detection (2019, background): “As we will discuss below, they could not have been in thermal equilibrium and must have been produced non-thermally or through gravitational particle production at the end of inflation [29].”
- Production of purely gravitational dark matter (2018, background): “[4, 5] considered the gravitational particle creation at the end of inflation as a mechanism for the production of supermassive DM.”