Invariant Cantor manifolds of quasi-periodic solutions for the derivative nonlinear Schrodinger equation

Meina Gao, Jianjun Liu

This paper is concerned with the derivative nonlinear Schrodinger equation with periodic boundary conditions $$\mathbf{i}u_t+u_{xx}+\mathbf{i}\Big(f(x,u,\bar{u})\Big)_x=0,\quad x\i…