Formation of primordial black holes after Starobinsky inflation D. Frolovsky, S. V. Ketov, S. K. Saburov
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ArticleContent type: Текст Media type: электронный Subject(s): первичные черные дыры | инфляционная модель ВселеннойGenre/Form: статьи в журналах Online resources: Click here to access online
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Modern physics letters A Vol. 37, № 21. P. 2250135-1-2250135-9Abstract: In this paper, we adapted the Appleby–Battye–Starobinsky model of F(R) gravity towards describing double cosmological inflation and formation of primordial black holes with masses up to 1019 g in the single-field model. We found that it is possible to get an enhancement of the power spectrum of scalar curvature perturbations to the level beyond the Hawking (black hole evaporation) limit of 1015 g, so that the primordial black holes resulting from gravitational collapse of those large primordial perturbations can survive in the present universe and form part of cold dark matter. Our results agree with the current measurements of cosmic microwave background radiation within 3σ but require fine-tuning of the parameters.
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In this paper, we adapted the Appleby–Battye–Starobinsky model of F(R) gravity towards describing double cosmological inflation and formation of primordial black holes with masses up to 1019 g in the single-field model. We found that it is possible to get an enhancement of the power spectrum of scalar curvature perturbations to the level beyond the Hawking (black hole evaporation) limit of 1015 g, so that the primordial black holes resulting from gravitational collapse of those large primordial perturbations can survive in the present universe and form part of cold dark matter. Our results agree with the current measurements of cosmic microwave background radiation within 3σ but require fine-tuning of the parameters.
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