Primordial Black Holes from Volkov–Akulov–Starobinsky Supergravity; Fortschritte der Physik; Vol. 71, iss. 6-7
| Parent link: | Fortschritte der Physik.— .— Washington: John Wiley and Sons Ltd. Vol. 71, iss. 6-7.— 2023.— Article number 2300039, 10 p. |
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| Shrnutí: | Title screen We study the formation of primordial black holes (PBH) in the Starobinsky supergravity coupled to the nilpotent superfield describing Volkov–Akulov goldstino. By using the no-scale Kähler potential and a polynomial superpotential, we find that under certain conditions our model can describe effectively single-field inflation with the ultra-slow-roll phase that appears near a critical (near-inflection) point of the scalar potential. This can lead to the formation of PBH as part of (or whole) dark matter, while keeping the inflationary spectral tilt and the tensor-to-scalar ratio in good agreement with the current cosmic microwave background (CMB) bounds. After inflation, supersymmetry is spontaneously broken at the inflationary scale with the vanishing cosmological constant Текстовый файл |
| Jazyk: | angličtina |
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2023
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| On-line přístup: | https://doi.org/10.1002/prop.202300039 |
| Médium: | Elektronický zdroj Kapitola |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=679930 |