Local regularity properties for 1D mixed nonlinear Schrödinger equations on half-line

Abstract

The main purpose of this paper is to consider the initial-boundary value problem for the 1D mixed nonlinear Schrödinger equation u_t={\mathrm{i}\alpha u}_{xx}+\beta u^{2-}{u}_x+\gamma {\left|u\right|}^2{u}_x+\mathrm{i}{\left|u\right|}^{2}u on the half-line with inhomogeneous boundary condition. We combine Laplace transform method with restricted norm method to prove the local well-posedness and continuous dependence on initial and boundary data in low regularity Sobolev spaces. Moreover, we show that the nonlinear part of the solution on the half-line is smoother than the initial data.

Key words： Mixed nonlinear Schrödinger (MNLS) equations; initial-boundary value problem (IBVP); Bourgain spaces; local well-posedness

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