Superheavy dark matter from thermal inflation

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It is quite plausible that the mass of the dark matter particle increases significantly after its freeze-out, due to a scalar field rolling to large values. We describe a realization of this scenario in the context of thermal inflation which naturally gives a cold dark matter particle with the correct cosmological abundance and a mass around 10(10) GeV, evading the conventional upper bound of 10(5) GeV. We also discuss another realization which could produce a cosmologically interesting abundance of near Planck mass, possibly electromagnetically charged, particles. The detection and observational consequences of superheavy cold dark matter or wimpzillas are briefly examined. [S0556-2821(99)04314-3].
Publisher
AMERICAN PHYSICAL SOC
Issue Date
1999-07
Language
English
Article Type
Article
Keywords

MEDIATED SUPERSYMMETRY-BREAKING; COSMOLOGICAL MODULI PROBLEM; DISCRETE GAUGE ANOMALIES; STANDARD MODEL; COSMIC-RAYS; PARTICLES; SCALE; BARYOGENESIS; SUPERGRAVITY; CONSTRAINT

Citation

PHYSICAL REVIEW D, v.60, no.2

ISSN
0556-2821
URI
http://hdl.handle.net/10203/75823
Appears in Collection
PH-Journal Papers(저널논문)
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