Well-posedness of the Cauchy problem for the semilinear Schrödinger equation with quadratic nonlinearity in Besov spaces
Well-posedness of the Cauchy problem for the semilinear Schrödinger equation with quadratic nonlinearity in Besov spaces
复制标题
Besov 空间中具有二次非线性的半线性薛定谔方程的柯西问题的适定性
DOI:
10.14492/hokmj/1285766209
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发表时间:
2005
期刊:
影响因子:
--
通讯作者:
Shifu Taoka
中科院分区:
文献类型:
--
作者:
Shifu Taoka
Well-posedness of the Cauchy problem for the semilinear Schrodinger equation with quadratic nonlinear terms is studied. By making use of Besov spaces we can improve the regularity assumption on the initial data. When the nonlinear term is c 1 u 2 + c 2 u 2 , our results are as follows: when d = 1 or 2, for any initial data u 0 ∈ H - 3 / 4 (R d ) there exists a unique local-in-time solution u ∈ B ( - 3 / 4 , 1 / 2 ) 2 , ( 2 , 1 ) - | ξ | 2 (R d × I T ). When d > 3, for any small data u 0 ∈ H ρ (R d ), where p(z) = z d / 2 - 2 log(2 + z), there exists a unique local-ill-time solution u ∈ B ( ρ , 1 / 2 ) 2 , ( 2 , 1 ) , - | ξ | 2 (R d × I T ), and for any u 0 ∈ H s (R d ), s > d/2-2, there exists a unique local-in-time solution u ∈ B ( s , 1 / 2 ) 2 , ( 2 , 1 ) - | ξ | 2(R d × I T ). Here IT = (-T, T). We also have results for the equation with the nonlinear term c 3 uu.