TY - JOUR

T1 - Deviations of R 2 cosmology from the Einstein's General Relativity

AU - Arbuzova, E. V.

N1 - Funding Information: This work was done under support of the RSF Grant No. 19-42-02004. Publisher Copyright: © 2020 World Scientific Publishing Company. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2020/12/30

Y1 - 2020/12/30

N2 - The cosmological history of the universe in the R + R2 gravity is studied starting from the "very beginning"up to the present time. The primordial inflationary expansion of the universe is considered and it is shown that the gravitational particle production by the oscillating curvature, R(t), led to a consistent transition to the Friedmann cosmology, but the cosmological evolution in the early universe strongly differed from the standard one. It is shown that the effects of gravitational production of particles had a significant influence on the evolution of the universe.

AB - The cosmological history of the universe in the R + R2 gravity is studied starting from the "very beginning"up to the present time. The primordial inflationary expansion of the universe is considered and it is shown that the gravitational particle production by the oscillating curvature, R(t), led to a consistent transition to the Friedmann cosmology, but the cosmological evolution in the early universe strongly differed from the standard one. It is shown that the effects of gravitational production of particles had a significant influence on the evolution of the universe.

KW - Cosmology

KW - curvature oscillations

KW - dark matter

KW - inflation

KW - DARK-MATTER

UR - http://www.scopus.com/inward/record.url?scp=85099104834&partnerID=8YFLogxK

U2 - 10.1142/S0217751X20440261

DO - 10.1142/S0217751X20440261

M3 - Article

AN - SCOPUS:85099104834

VL - 35

JO - International Journal of Modern Physics A

JF - International Journal of Modern Physics A

SN - 0217-751X

IS - 36

M1 - 2044026

ER -