Large data scattering for the defocusing NLKG on waveguide ${\mathbb{R}}^d\times \mathbb{T}$

Luigi Forcella, Lysianne Hari

We consider the pure-power defocusing nonlinear Klein-Gordon equation, in the energy subcritical case, posed on the product space ${\mathbb{R}}^d\times \mathbb{T}$, where $\mathbb{T}$ i…