242 citations · 3.5k across the 87 of their papers we have counts for
5 papers · 1 filter
Cutting rule for in-in correlators and cosmological collider
Yohei Ema, Kyohei Mukaida
We derive a cutting rule for equal-time in-in correlators including cosmological correlators based on Keldysh basis, which decomposes diagrams into fully retarded functions a…
Thermalization and hotspot formation around small primordial black holes
Minxi He, Kazunori Kohri, Kyohei Mukaida +1
We quantitatively analyze a basic question: what is the stationary solution of the background plasma temperature profile around a black hole (BH)? One may naively expect that the t…
Thermal Wash-in Leptogenesis via Heavy Higgs Decay
Kyohei Mukaida, Hidenaga Watanabe, Masaki Yamada
We present a conceptually simple model to generate asymmetries that are not directly related to baryon nor lepton charges. The model employs a three-Higgs doublet framework, wherei…
Perturbative reheating and thermalization of pure Yang-Mills plasma
Kyohei Mukaida, Masaki Yamada
We investigate the thermalization of high-energy particles injected from the perturbative decay of inflaton during the pre-thermal phase of reheating in detail. In general, thermal…
Starobinsky Inflation and beyond in Einstein-Cartan Gravity
Minxi He, Muzi Hong, Kyohei Mukaida
We show that various types of scalaron-induced inflation, including the Starobinsky inflation, can be realized in the Einstein-Cartan gravity with the Nieh-Yan term and/or the Hols…