7 papers
Axion-driven spontaneous leptogenesis, precisely
Konstantin Kuckenberg, Martin A. Mojahed, Kai Schmitz +1
We revisit a minimal scenario for spontaneous leptogenesis where the asymmetry generation is driven by a heavy axion-like field evolving via standard misalignment. We focus on the…
Asymgenesis
Martin A. Mojahed, Sascha Weber
We present a framework based on the standard type-I seesaw model that relates the baryon asymmetry of the universe to the dark matter (DM) density. The framework, which we name "As…
Freeze-in leptogenesis without the need for right-handed neutrino oscillations
Martin A. Mojahed, Sascha Weber
We present an experimentally testable leptogenesis mechanism based on the standard type-I seesaw model that successfully operates at right-handed-neutrino (RHN) masses around the G…
A lower bound on the right-handed neutrino mass from wash-in leptogenesis
Martin A. Mojahed, Kai Schmitz, Dominik Wilken
Leptogenesis is an attractive scenario for the generation of the baryon asymmetry of the Universe that relies on the dynamics of right-handed neutrinos (RHNs) in the seesaw extensi…
Gravitational charge production
Martin A. Mojahed, Kai Schmitz, Xun-Jie Xu
Wash-in leptogenesis is an attractive mechanism to produce the baryon asymmetry of the Universe. It treats right-handed-neutrino interactions as spectator processes, on the same fo…
Graviton- and Inflaton-mediated Dark Matter Production after Large Field Polynomial Inflation
Nicolás Bernal, Julia Harz, Martin A. Mojahed +1
Polynomial inflation is a simple cosmological scenario, which fits the cosmic microwave background data well. It provides testable predictions for the tensor-to-scalar ratio and th…