535 citations · 1.3k across the 26 of their papers we have counts for
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Significance of soft-scale breaking on primordial black hole production in Coleman-Weinberg type supercooling-phase transition
He-Xu Zhang, Katsuya Hashino, Hiroyuki Ishida +1
Ultra-supercooling phase transitions can generate large overdensities in the Universe, potentially leading to the formation of primordial black holes (PBHs), which can also be a da…
RGE effects on new physics searches via gravitational waves
Katsuya Hashino, Daiki Ueda
Gravitational wave (GW) observations offer a promising probe of new physics associated with a first-order electroweak phase transition. Precision studies of the Higgs potential, in…
Super-critical primordial black hole formation via delayed first-order electroweak phase transition
Katsuya Hashino, Shinya Kanemura, Tomo Takahashi +2
The delay of the first-order electroweak phase transitions (EWPT) may lead to the emergence of baby universes inside wormhole structures due to the large vacuum energy density in f…