Nonlinear Differential Equations and Applications (NoDEA) ( IF 1.2 ) Pub Date : 2021-01-30 , DOI: 10.1007/s00030-020-00670-8 L. Chaichenets , D. Hundertmark , P. Kunstmann , N. Pattakos
We study the one dimensional nonlinear Schrödinger equation with power nonlinearity \(\left| u \right| ^{\alpha - 1} u\) for \(\alpha \in [1,5]\) and initial data \(u_0 \in H^1({{\mathbb {T}}}) + L^2({{\mathbb {R}}})\). We show via Strichartz estimates that the Cauchy problem is locally well-posed. In the case of the quadratic nonlinearity (\(\alpha = 2\)) we obtain global well-posedness in the space \(C({{\mathbb {R}}}, H^1({{\mathbb {T}}}) + L^2({{\mathbb {R}}}))\) via Gronwall’s inequality.
中文翻译:
关于$$ H ^ 1({{\ mathbb {T}}})+ L ^ 2({{\ mathbb {R}}})$$ H 1(T)+上的二次NLS的全局适定性L 2(R)
我们针对\(\ alpha \ in [1,5] \)和初始数据\(u_0 ),研究具有功率非线性\(\ left | u \ right | ^ {\ alpha-1} u \)的一维非线性Schrödinger方程\ in H ^ 1({{\ mathbb {T}}})+ L ^ 2({{\ mathbb {R}}})\)。我们通过Strichartz估计表明,柯西问题在当地是恰当的。在二次非线性的情况下(\(\阿尔法= 2 \) ),我们得到全球适定性在空间\(C({{\ mathbb {R}}},H ^ 1({{\ mathbb【T }}})+ L ^ 2({{\ mathbb {R}}}))\)通过Gronwall的不等式。