Superheavy dark matter in light of dark radiation
نویسندگان
چکیده
منابع مشابه
Superheavy dark matter
We show that, contrary to the standard lore, dark matter may be superheavy (many orders of magnitude larger than the weak scale). We show that massive 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 ...
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In the standard dark matter scenarios, WIMPs are usually considered to have once been in local thermodynamic equilibrium (LTE), and their present abundance is determined by their self-annihilation cross section. In that case, unitarity and the lower bound on the age of the universe constrains the mass of the relic to be less than 500 TeV. 1 On the other hand, if the DM particles never attained ...
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ژورنال
عنوان ژورنال: Journal of the Korean Physical Society
سال: 2014
ISSN: 0374-4884,1976-8524
DOI: 10.3938/jkps.65.805