Work

Sub-Planckian Scale and Limits for f(R) Models

Year: 2021

Type: article

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 function f(R). An initial metric of the Universe is supposed to be maximally symmetric with the positive curvature.

Source: Symmetry

DOI: 10.3390/sym13020313

Authors: Polina Petriakova, Arkady Popov, Sergey Rubin

Institutions: National Research Nuclear University MEPhI, Kazan Federal University

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,944

Funders: Russian Foundation for Basic Research, Ministry of Science and Higher Education of the Russian Federation