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Abstract <p>The scenario of gravitational baryogenesis modified through adding an <i>R</i><sup>2</sup> term into the model is explored. This modification allows eliminating the cosmological instability inherent to the canonical version of gravitational baryogenesis. In the updated model, the exponential growth of the curvature is transformed into high-frequency oscillations, which, in turn, results in forming super-heavy dark matter particles. Slow decay of these particles through virtual black holes can contribute to the flux of ultra-high-energy cosmic rays.</p>

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Modified Baryogenesis and Ultra-High-Energy Cosmic Rays

  • 期刊论文

  • 发表日期：

    2025年6月27日

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  • E. V. Arbuzova

摘要

Abstract

The scenario of gravitational baryogenesis modified through adding an R2 term into the model is explored. This modification allows eliminating the cosmological instability inherent to the canonical version of gravitational baryogenesis. In the updated model, the exponential growth of the curvature is transformed into high-frequency oscillations, which, in turn, results in forming super-heavy dark matter particles. Slow decay of these particles through virtual black holes can contribute to the flux of ultra-high-energy cosmic rays.