1 citations · 1 across the 5 of their papers we have counts for
5 papers
Hydrodynamics of Filtered Dark Matter: A Two-Component Approach
Juntaro Wada
We study the hydrodynamics of the Filtered Dark Matter (Filtered DM) scenario during a first-order phase transition (FOPT). In this scenario, the bubble wall is highly reflective o…
Asymmetric Dark Matter from Low-Scale Spontaneous Leptogenesis
Hiroki Takahashi, Juntaro Wada
We investigate a novel type of asymmetric dark matter (ADM) model in which the dark matter asymmetry and the baryon asymmetry in our universe (BAU) are produced simultaneously via…
Gravitational Decays of Secluded Scalars and Graviton Dark Radiation
Kazunori Nakayama, Fuminobu Takahashi, Juntaro Wada
We discuss graviton dark radiation produced by the decay of a secluded scalar field that couples to the Standard Model (SM) only through gravity. Such scalar fields are long-lived,…
Gauge coupling jump and small instantons from a large non-minimal coupling
Juntaro Wada, Wen Yin
If a scalar field couples to the Ricci scalar with a large non-minimal coupling, the Standard Model coupling parameters can differ above and below an intermediate field range of th…
Majoron-Driven Leptogenesis in Gauged Model
Juntaro Wada
We propose a novel leptogenesis scenario in the gauged model. Achieving successful leptogenesis in the symmetric phase is challenging due to the a…