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

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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Cited by in corpus (1)

• Dynamics of a homogeneous and isotropic space in pure cubic f(R) gravity