On the Cauchy problem for a derivative nonlinear Schrödinger equation with nonvanishing boundary conditions

Abstract

<p style='text-indent:20px;'>In this paper we consider the Schrödinger equation with nonlinear derivative term. Our goal is to initiate the study of this equation with non vanishing boundary conditions. We obtain the local well posedness for the Cauchy problem on Zhidkov spaces <inline-formula><tex-math id="M1">\begin{document}$ X^k( \mathbb{R}) $\end{document}</tex-math></inline-formula> and in <inline-formula><tex-math id="M2">\begin{document}$ \phi+H^k( \mathbb{R}) $\end{document}</tex-math></inline-formula>. Moreover, we prove the existence of conservation laws by using localizing functions. Finally, we give explicit formulas for stationary solutions on Zhidkov spaces.</p>