Dark matter in $R+R^2$ cosmology

Abstract

Production of massive stable relics in $R^2$-modified gravity is considered. It is shown that the cosmological evolution and kinetics of massive species differs significantly from those in the conventional cosmology. The results are applied to the lightest supersymmetric particles and it is argued that they are viable candidates for the constituents of dark matter, if their mass is about 1000 TeV.

arXiv comment13 pages, Several essential references are added;Several references and explanatory comments on the validity of the results are added to satisfy the referee comments; Also correct grant has been acknowledged

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Cited by in corpus (6)

• Primordial Gravitational Waves in Nonstandard Cosmologies
• Variable Inflaton Equation of State and Reheating
• Superheavy dark matter in $R+R^2$ cosmology with conformal anomaly
• New Options for SUSY-kind Dark Matter
• Superheavy dark matter in $R^2$-cosmology
• Asymmetric baryon capture by primordial black holes and baryon asymmetry of the universe