50 citations · 291 across the 24 of their papers we have counts for
4 papers · 1 filter
Disentangling mass spectra of multiple fields in cosmological collider
Shuntaro Aoki, Masahide Yamaguchi
We study effects of multiple scalar fields (scalar isocurvatons) with the Hubble scale masses on the inflationary bispectrum in the squeezed limit, particular paying attention to t…
Fate of domain walls in 5D gravitational theory with compact extra dimension
Hiroyuki Abe, Shuntaro Aoki, Yu Asai +1
We pursue the time evolution of the domain walls in 5D gravitational theory with a compact extra dimension by numerical calculation. In order to avoid a kink-antikink pair that dec…
ALP Constraints in Gauged Supergravity
Shuntaro Aoki, Henry Liao
We discuss a possibility of restricting parameters in supergravity based on axion observations. We derive conditions that prepotential and gauge couplings should sa…
Minimal Starobinsky supergravity coupled to dilaton-axion superfield
Yermek Aldabergenov, Shuntaro Aoki, Sergei V. Ketov
The minimal Starobinsky supergravity with the inflaton (scalaron) and the goldstino in a massive vector supermultiplet is coupled to the dilaton-axion chiral superfield with the no…