ASYMPTOTIC BEHAVIOUR FOR SCHR ODINGER EQUATIONS WITH A QUADRATIC NONLINEARITY IN ONE-SPACE DIMENSION

ASYMPTOTIC BEHAVIOUR FOR SCHR ODINGER EQUATIONS WITH A QUADRATIC NONLINEARITY IN ONE-SPACE DIMENSION
复制标题

一维二次非线性 SCHR ODINGER 方程的渐近行为

DOI:
--
复制
发表时间:
2001
期刊:
--
影响因子:
--
通讯作者:
P. Naumkin
P. Naumkin
中科院分区:
--
文献类型:
--
作者:
N. Hayashi;P. Naumkin

文献摘要

被引文献

相似文献

我们考虑一维空间中具有二次非线性的薛定谔方程的柯西问题iut + 1 uxx = t juxj 2 ; u(0;x)= u 0(x);其中2(0; 1)。从启发式的观点来看,当2(1=2; 1)时,该问题的解应该具有拟线性特征。本文证明了由于非线性项的特殊结构,对于所有2(0; 1),解不具有拟线性特征。我们还证明了,对于2(1=2; 1),如果初始数据u 0 2 H3;0 \H2;2是小的,那么解决方案有一个缓慢的时间衰减,如t = 2。对于2(0; 1=2),如果我们假设初始数据u 0是解析的并且很小,那么会发生相同的时间衰减。
We consider the Cauchy problem for the Schrodinger equation with a quadratic nonlinearity in one space dimension iut + 1 uxx = t juxj 2 ; u(0;x) = u0(x); where 2 (0; 1). From the heuristic point of view, solutions to this problem should have a quasilinear character when 2 (1=2; 1). We show in this paper that the solutions do not have a quasilinear character for all 2 (0; 1) due to the special structure of the nonlinear term. We also prove that for 2 (1=2; 1) if the initial data u0 2 H 3;0 \ H 2;2 are small, then the solution has a slow time decay such as t = 2 . For 2 (0; 1=2), if we assume that the initial data u0 are analytic and small, then the same time decay occurs.