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- W3097854810 abstract "We study the production of scalar particles $chi$ coming from the decay of a highly occupied scalar field $phi$ in the framework of a toy model with an interaction $gphichi^2$. We explore the parametric resonant instabilities coming from Bose enhancement in two opposite cases; (1) massive $phi$ and massless $chi$, which has been vastly discussed in the literature, and (2) massless $phi$ and massive $chi$. For a momentum $p$ of the decaying field and a mass $m_chi$ of the produced particles, we find that in case (2) the decay of the massless clump is allowed by Bose enhancement if the energy density of $phi$ exceeds the instability threshold $p^2m_chi^4/(2g^2)$. We also compute the spontaneous decay rate for both cases." @default.
- W3097854810 created "2020-11-09" @default.
- W3097854810 creator A5046128831 @default.
- W3097854810 date "2020-09-08" @default.
- W3097854810 modified "2023-09-27" @default.
- W3097854810 title "Production of matter from the decay of a massless particle clump" @default.
- W3097854810 hasPublicationYear "2020" @default.
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