240 citations · 1.3k across the 27 of their papers we have counts for
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On Longevity of I-ball/Oscillon
Kyohei Mukaida, Masahiro Takimoto, Masaki Yamada
We study I-balls/oscillons, which are long-lived, quasi-periodic, and spatially localized solutions in real scalar field theories. Contrary to the case of Q-balls, there is no evid…
O() Invariance of the Multi-Field Bounce
Kfir Blum, Masazumi Honda, Ryosuke Sato +2
In his 1977 paper on vacuum decay in field theory: The Fate of the False Vacuum, Coleman considered the problem of a single scalar field and assumed that the minimum action tunnell…
Gravitational waves from bubble collisions: analytic derivation
Ryusuke Jinno, Masahiro Takimoto
We consider gravitational wave production by bubble collisions during a cosmological first-order phase transition. In the literature, such spectra have been estimated by simulating…
Probing classically conformal model with gravitational waves
Ryusuke Jinno, Masahiro Takimoto
We study the cosmological history of the classical conformal gauge extension of the standard model, in which the physical scales are generated via the Coleman-Weinberg-type s…