Gravitational wave sourced by decay of massive particle from primordial black hole evaporation
Ki-Young Choi,
Erdenebulgan Lkhagvadorj,
Satyabrata Mahapatra
Abstract:In this article, we investigate the stochastic gravitational waves (GWs) spectrum, resulting from the emission of gravitons through bremsstrahlung, in the decay of particles produced by Hawking radiation. Although particle decays inevitably entail the emission of graviton due to bremsstrahlung, the associated decay width is notably suppressed due to the Planck scale suppression in the coupling of matter fields to gravitons. Consequently, the relic abundance of such GWs constituted of these gravitons undergoes … Show more
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