R2-cosmology and new windows for superheavy dark matter

Research output: Contribution to journalReview articlepeer-review

Abstract

Evolution and heating of the universe in R2-modified gravity are considered. It is shown that the universe’s history can be separated into four different epochs: (1) inflation, (2) heating due to curvature oscillations (scalaron decay), (3) transition to matter dominated period, and (4) conventional cosmology governed by General Relativity. Cosmological density of dark matter (DM) particles for different decay channels of the scalaron is calculated. The bounds on the masses of DM particles are derived for the following dominant decay modes: to minimally coupled scalars, to massive fermions, and to gauge bosons.

Original languageEnglish
Article number877
JournalSymmetry
Volume13
Issue number5
DOIs
Publication statusPublished - May 2021

Keywords

  • Dark matter
  • R-cosmology
  • Scalaron decay
  • Superheavy particles
  • Universe heating

OECD FOS+WOS

  • 1.02 COMPUTER AND INFORMATION SCIENCES
  • 1.03 PHYSICAL SCIENCES AND ASTRONOMY
  • 1.04 CHEMICAL SCIENCES
  • 1.01 MATHEMATICS

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