Superheavy dark matter in R+ R2 cosmology with conformal anomaly

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Cosmological evolution and particle creation in R2-modified gravity are considered for the case of the dominant decay of the scalaron into a pair of gauge bosons due to conformal anomaly. It is shown that in the process of thermalization superheavy dark matter with the coupling strength typical for the GUT SUSY can be created. Such dark matter would have the proper cosmological density if the particle mass is close to 10 12 GeV.

Original languageEnglish
Article number1047
Number of pages11
JournalEuropean Physical Journal C
Issue number11
Publication statusPublished - Nov 2020



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