Cubic NLS;
almost global existence;
method of space-time resonances;
WAVE-EQUATIONS;
ASYMPTOTIC-BEHAVIOR;
INITIAL DATA;
LARGE TIME;
LIFE-SPAN;
SCATTERING;
BOUNDS;
NLS;
D O I:
10.3934/dcds.2017089
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
We consider non-gauge-invariant cubic nonlinear Schrodinger equations in one space dimension. We show that initial data of size epsilon in a weighted Sobolev space lead to solutions with sharp L-x(infinity) decay up to time exp(C-epsilon(-2)). We also exhibit norm growth beyond this time for a specific choice of nonlinearity.