Primordial black hole dark matter in dilaton-extended two-field Starobinsky inflation
| Parent link: | Physical Review D: covering particles, fields, gravitation, and cosmology Vol. 103, iss. 8.— 2021.— [083518, 23 p.] |
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| Outros autores: | , |
| Summary: | Title screen We investigate the production of primordial black holes and their contribution to the presently observed dark matter in a dilaton two-field extension of Starobinsky’s quadratic f(R) model of inflation. The model features a multi-field amplification mechanism which leads to the generation of a sharp peak in the inflationary power spectrum at small wavelengths responsible for the production of primordial black holes. This mechanism is significantly different from single-field models and requires a stochastic treatment during an intermediate phase of the inflationary dynamics. We find that the model leads to a successful phase of effective single-field Starobinsky inflation for wavelengths probed by the cosmic microwave background radiation and explains the observed cold dark matter content in the Universe by the formation of primordial black holes. |
| Idioma: | inglés |
| Publicado: |
2021
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| Acceso en liña: | http://earchive.tpu.ru/handle/11683/132664 https://doi.org/10.1103/PhysRevD.103.083518 |
| Formato: | Electrónico Capítulo de libro |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664588 |
| Summary: | Title screen We investigate the production of primordial black holes and their contribution to the presently observed dark matter in a dilaton two-field extension of Starobinsky’s quadratic f(R) model of inflation. The model features a multi-field amplification mechanism which leads to the generation of a sharp peak in the inflationary power spectrum at small wavelengths responsible for the production of primordial black holes. This mechanism is significantly different from single-field models and requires a stochastic treatment during an intermediate phase of the inflationary dynamics. We find that the model leads to a successful phase of effective single-field Starobinsky inflation for wavelengths probed by the cosmic microwave background radiation and explains the observed cold dark matter content in the Universe by the formation of primordial black holes. |
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| DOI: | 10.1103/PhysRevD.103.083518 |