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Production of Purely Gravitational Dark Matter: The Case of Fermion and Vector Boson
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Production of Purely Gravitational Dark Matter: The Case of Fermion and Vector Boson
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We consider the simplest possibility for a model of particle dark matter in which dark matter has only gravitational interaction with the standard model sector. Even in such a case, it is known that the gravitational particle production in an expanding universe may lead to a correct relic abundance depending on the inflation scale and the mass of dark matter particle. We provide a comprehensive and systematic analysis of the gravitational particle production of fermionic and vectorial dark matter, and emphasize that particles which are much heavier than the Hubble parameter but lighter than inflaton can also be produced abundantly.
Forward citations
Cited by 12 Pith papers
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