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hep-ph2024
Gravitational Wave Production During Reheating: From the Inflaton to Primordial Black Holes
Mathieu Gross, Essodjolo Kpatcha, Yann Mambrini +2
We calculate the gravitational waves (GWs) produced by primordial black holes (PBHs) in the presence of the inflaton condensate in the early Universe. Combining the GW production f…
hep-ph2024
Kaluza-Klein Graviton Freeze-In and Big Bang Nucleosynthesis
Mathieu Gross, Dan Hooper
In models featuring extra spatial dimensions, particle collisions in the early universe can produce Kaluza-Klein gravitons. Such particles will later decay, potentially impacting t…
hep-ph2024
Preheating with deep learning
Jong-Hyun Yoon, Simon Cléry, Mathieu Gross +1
We apply deep learning techniques to the late-time turbulent regime in a post-inflationary model where a real scalar inflaton field and the standard model Higgs doublet interact wi…