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 $\varphi$ coupled to a complex scalar $\sigma$, the coupling of the $\varphi$ and $\sigma$ being given by two types, $λ_{σϕ}σ^\dagger…