8 citations · 45 across the 13 of their papers we have counts for
9 papers · 1 filter
Conjugate Boundary Conditions, Kaluza-Klein Fermions, and an Extended Seesaw Model
Yugo Abe, Yuki Adachi, Yukihiro Fujimoto
In this paper, we discuss the conjugate boundary condition (CBC), which has recently been studied as a way of realizing a Majorana fermion within a compactified five-dimensional th…
UV stability of 1-loop radiative corrections in higher-derivative scalar field theory
Yugo Abe, Takeo Inami, Keisuke Izumi
We consider the theory of a higher-derivative (HD) real scalar field coupled to a complex scalar , the coupling of the and being given by two types, $λ_{σϕ}σ^\dagger…
High-energy properties of the graviton scattering in quadratic gravity
Yugo Abe, Takeo Inami, Keisuke Izumi
We obtain the matter-graviton scattering amplitude in the gravitational theory of quadratic curvature, which has term in the action. Unitarity bound is not satisfied bec…
Perturbative -matrix unitarity () in gravity
Yugo Abe, Takeo Inami, Keisuke Izumi
We show that in the quadratic curvature theory of gravity, or simply gravity, the tree-level unitariy bound (tree unitarity) is violated in the UV region but an analog…
S-matrix Unitarity and Renormalizability in Higher Derivative Theories
Yugo Abe, Takeo Inami, Keisuke Izumi +2
We investigate the relation between the -matrix unitarity () and the renormalizability, in theories with negative norm states. The relation has been confirmed in…
Matter scattering in gravity and unitarity
Yugo Abe, Takeo Inami, Keisuke Izumi +1
We investigate the ultraviolet (UV) behavior of two-scalar elastic scattering with graviton exchanges in higher curvature gravity theory. In the Einstein gravity, matter scattering…
Dark energy from gravitational corrections
Yugo Abe, Masaatsu Horikoshi, Yoshiharu Kawamura
We study physics concerning the cosmological constant problem in the framework of effective field theory and suggest that a dominant part of dark energy can originate from gravitat…
Inflation from radion gauge-Higgs potential at Planck scale
Yugo Abe, Takeo Inami, Yoshiharu Kawamura +1
We study whether the inflation is realized based on the radion gauge-Higgs potential obtained from the one-loop calculation in the 5-dimensional gravity coupled to a gauge t…
Radion stabilization in the presence of Wilson line phase
Yugo Abe, Takeo Inami, Yoshiharu Kawamura +1
We study the stabilization of an extra-dimensional radius in the presence of a Wilson line phase of an extra gauge symmetry on a five-dimensional space-time, using the effec…