Sharp $L^4$ Strichartz estimate for Hyperbolic Schrödinger equation on $\mathbb{R}\times \mathbb{T}$

Yangkendi Deng, Chenjie Fan, Zehua Zhao

We prove the sharp $L^4$ Strichartz estimate without derivative loss for the hyperbolic Schrödinger equation on $\mathbb{R}\times \mathbb{T}$, \begin{equation} \|e^{it (\partial_{x_…