Hs(RR3)空间内非线性混合Schrödinger方程组解的唯一性
2016-06-02贾翠
贾翠
(湖北汽车工业学院理学院,湖北十堰442002)
Hs(RR3)空间内非线性混合Schrödinger方程组解的唯一性
贾翠
(湖北汽车工业学院理学院,湖北十堰442002)
摘要:依据仿积技术和Besov空间,以Schrödinger容许对为切入点,证明了当时,三维空间中的非线性混合Schrödinger方程组系统中的解的无条件唯一性。
关键词:唯一性;Strichartz估计;仿积估计;Hölder不等式
oi:10.3969/j.issn.1008-5483.2016.01.016
0 引言和主要结果
考虑如下非线性混合Schrödinger方程组
混合Schrödinger方程组(1)是由Manakov和Zakharov在考虑完整积分和离散动力学的Stochas⁃tization时引入的。
简单地回顾一些PDE问题的解的无条件唯一性的结果。在和基于先验估计的辅助空间(Strichartz空间,平滑空间,…)框架内常运用不动点理论构造强解。在辅助空间内解的唯一性称为有条件的唯一性。另一方面,无辅助空间的唯一性称为无条件唯一性。涉及到的无条件唯一性的参考文献主要是关于Schrödinger方程[1-9],波动方程[4,10-13],Navier-Stokes系统[14],Benjamin-Ono方程[15],Zakharov系统和Maxwell-Dirac方程情形[16-17],Klein-Gorden-Schödinger系统[18]和Dirac-Klein-Gorden方程[19]。
基于以上结果,本文的目的是证明系统(1)的解的无条件唯一性。关于非线性混合Schrödinger方程组(1),研究过H1(R3)空间中解的局部适定性。因此,可以总结非线性混合Schrödinger方程组(1)的局部适定性如下:
有解的局部适定性,一个很自然的问题是这个解是不是无条件唯一的。现陈述主要结果。
1 符号和预备知识
1.1符号
是有界的,当r=∞作一些必要的修改。引进时空Lebesgu空间的范数为
再回顾齐次空间Ḃsp,q的定义。对任一
1.2一些估计
运用Hölder’s不等式和Sobolev嵌入,得到引理2~4。
下述仿积引理是证明主要结果的关键工具,可用仿积估计证明。
2 主要结果的证明
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Unconditional Uniqueness for Nonlinear Coupled Schrödinger Equations in Hs()
Jia Cui
(School of Science, Hubei University of Automotive Technology, Shiyan 442002, China)
Abstract:According to the paraproduct techniques and Besov spaces, based on Schrödinger-admissible pairs, the unconditional uniqueness of the solutions to the system of the nonlinear coupled Schrödinger equation in Ct(Hs)was provedKey words: uniqueness; Strichartz estimation; praproduct estimation; Hölder inequality
作者简介:贾翠(1988-),女,山东泰安人,硕士,从事应用数学方面的研究。E-mail:jiacui3621651@163.com
收稿日期:2015-10-31
中图分类号:O175.29
文献标识码:A
文章编号:1008-5483(2016)01-0067-04 d