## Differential and Integral Equations

### On the critical exponent for the Schrödinger equation with a nonlinear boundary condition

#### Abstract

We study the Schrödinger equation: $iu_t+u_{xx}=0,$ $x\in {\bf R}_+,$ $t>0$ with a nonlinear boundary condition $-u_x(0,t)=\vert u(0,t)\vert ^{p-1} u(0,t),$ $t>0$. We show that if $1 <p <3,$ every solution is global in $H^1({\bf R}_+)$, while if $p\ge 3$, then nonglobal solutions exist.

#### Article information

Source
Differential Integral Equations, Volume 17, Number 11-12 (2004), 1293-1307.

Dates
First available in Project Euclid: 21 December 2012