242 citations · 3.5k across the 87 of their papers we have counts for
9 papers · 1 filter
Wash-in leptogenesis after axion inflation
Valerie Domcke, Kohei Kamada, Kyohei Mukaida +2
CP violation and the violation of baryon-minus-lepton number B-L do not necessarily have to occur simultaneously in order to accomplish successful leptogenesis. Instead, it suffice…
Formation of hot spots around small primordial black holes
Minxi He, Kazunori Kohri, Kyohei Mukaida +1
In this paper, we investigate the thermalization of Hawking radiation from primordial black holes (PBHs) in the early Universe, taking into account the interference effect on therm…
Cascades of high-energy SM particles in the primordial thermal plasma
Kyohei Mukaida, Masaki Yamada
High-energy standard model (SM) particles in the early Universe are generated by the decay of heavy long-lived particles. The subsequent thermalization occurs through the splitting…
A new constraint on primordial lepton flavour asymmetries
Valerie Domcke, Kohei Kamada, Kyohei Mukaida +2
A chiral chemical potential present in the early universe can source helical hypermagnetic fields through the chiral plasma instability. If these hypermagnetic fields survive until…
Understanding anomalous particle production in massless QED via time-varying angle
Yu Hamada, Ryuichiro Kitano, Ryutaro Matsudo +1
The Maxwell equations imply that, under the background of non-zero , varying term produces . An interesting example is the…
Stochastic formalism for U(1) gauge fields in axion inflation
Tomohiro Fujita, Kyohei Mukaida, Yuichiro Tada
We develop the stochastic formalism for gauge fields that has the Chern-Simons coupling to a rolling pseudo-scalar field during inflation. The Langevin equations fo…