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arXiv · 2102.06890

Sub-Planckian scale and limits for $f(R)$ models

P. M. Petryakova·Arkady A. Popov·Sergey G. Rubin
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Abstract

We study the Universe evolution starting from the sub-Planckian scale to present times. The requirement for an exponential expansion of the space with the observed metric as a final stage leads to significant restrictions on the parameter values of a $f(R)$-function. An initial metric of the Universe is supposed to be maximally symmetric with the positive curvature.

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P. M. Petryakova, Arkady A. Popov, Sergey G. Rubin. 2021-02-13. Sub-Planckian scale and limits for $f(R)$ models. https://doi.org/10.3390/sym13020313

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