Production of purely gravitational dark matter
By Yohei Ema, K. Nakayama, Yong Tang. Journal of High Energy Physics, 2018
147 citations recorded by the source corpus.
In the purely gravitational dark matter scenario, the dark matter particle does not have any interaction except for gravitational one. We study the gravitational particle production of dark matter particle in such a minimal setup and show that correct amount of dark matter can be produced depending on the inflation model and the dark matter mass. In particular, we carefully evaluate the particle production rate from the transition epoch to the inflaton oscillation epoch in a realistic inflation model and point out that the gravitational particle production is efficient even if dark matter mass is much larger than the Hubble scale during inflation as long as it is smaller than the inflaton mass.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/9087fc054b80899aaf0a266f2081109cb13730be
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Citations in the corpus
- Gravitational production of vector dark matter (2020, background): “Recently, there has been a renewed interest in models of gravitational production of DM during and after inflation due to quantum fluctuations [15–33].”