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arXiv · 2310.12023

Gravitational Waves from Particle Decays during Reheating

Shinya Kanemura·Kunio Kaneta
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Abstract

Gravitational waves have become an irreplaceable tool for exploring the post-inflationary universe. Their cosmological and astrophysical origins have been attracting numerous attention. In this Letter, we point out a novel source of ultra-high frequency gravitational waves: the decay of particles produced during the reheating era. We highlight the decay of the Higgs boson as a representative case, showing how it yields a testable gravitational wave spectrum by future observations.

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Shinya Kanemura, Kunio Kaneta. 2023-10-18. Gravitational Waves from Particle Decays during Reheating. https://arxiv.org/abs/2310.12023

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