Cold and hot dark matter from single nonthermal relic

Citation
R. Brustein et M. Hadad, Cold and hot dark matter from single nonthermal relic, PHYS REV L, 82(15), 1999, pp. 3016-3019
Citations number
38
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
82
Issue
15
Year of publication
1999
Pages
3016 - 3019
Database
ISI
SICI code
0031-9007(19990412)82:15<3016:CAHDMF>2.0.ZU;2-B
Abstract
The origin of dark matter in the Universe may be scalar particles produced by amplification of quantum fluctuations during a period of dilaton-driven inflation. We show, for the first time, that a single species of such parti cles, depending on its mass and interactions, can be a source of both cold and hot dark matter simultaneously. Detection of such weakly interacting pa rticles with masses below a fraction of an eV presents a new challenge for dark matter searches. [S0031-9007(99)08891-2].