Improved model of large-field inflation with primordial black hole production in Starobinsky-like supergravity; Classical and Quantum Gravity; Vol. 41, iss. 19

Improved model of large-field inflation with primordial black hole production in Starobinsky-like supergravity; Classical and Quantum Gravity; Vol. 41, iss. 19

書目詳細資料
Parent link:	Classical and Quantum Gravity.— .— Bristol: IOP Publishing Ltd. Vol. 41, iss. 19.— 2024.— Article number 195014, 19 p.
主要作者:	Ishikawa Ryotaro
企業作者:	National Research Tomsk Polytechnic University (570)
其他作者:	Ketov S. V. Sergey Vladimirovich
總結:	Title screen A viable model of large-field (chaotic) inflation with efficient production of primordial black holes is proposed in Starobinsky-like (modified) supergravity leading to the 'no-scale-type' Kähler potential and the Wess-Zumino-type ('renormalizable') superpotential. The cosmological tilts are in good (within 1σ) agreement with Planck measurements of the cosmic microwave background radiation. In addition, the power spectrum of scalar perturbations has a large peak at smaller scales, which leads to a production of primordial black holes from gravitational collapse of large perturbations with the masses about 1017 g. The masses are beyond the Hawking (black hole) evaporation limit of 1015 g, so that those primordial black holes may be viewed as viable candidates for a significant part or the whole of the current dark matter. The parameters of the superpotential were fine-tuned for those purposes, while the cubic term in the superpotential is essential whereas the quadratic term should vanish. The vacuum after inflation (relevant to reheating) is Minkowskian. The energy density fraction of the gravitational waves induced by the production of primordial black holes and their frequency were also calculated in the second order with respect to perturbations. Текстовый файл AM_Agreement
語言:	英语
出版:	2024
主題:	электронный ресурс труды учёных ТПУ
在線閱讀:	https://doi.org/10.1088/1361-6382/ad7187
格式:	電子 Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=676268

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