中文

矩阵薛定谔方程波算子的$L^{p}$有界性

数学物理 2021-08-03 v3 math.MP

摘要

我们证明,在半直线上具有一般自伴边界条件的n×nn \times n矩阵薛定谔方程,其波算子在空间Lp(R+,Cn),1<p<L^p(\mathbb R^+, \mathbb C^n), 1 < p < \infty中有界,其中矩阵势VV为缓慢衰减的自伴矩阵势,满足0(1+x)V(x)dx<.\int_{0}^{\infty }\, (1+x) |V(x)|\, dx < \infty.此外,假设0(1+xγ)V(x)dx<,γ>52,\int_{0}^{\infty }\, (1+x^\gamma) |V(x)|\, dx < \infty, \gamma > \frac{5}{2},且散射矩阵在零能量与无穷能量处为单位矩阵,我们证明波算子在L1(R+,Cn)L^1(\mathbb R^+, \mathbb C^n)L(R+,Cn)L^\infty(\mathbb R^+, \mathbb C^n)中有界。我们还证明,直线上n×nn\times n矩阵薛定谔方程的波算子在空间Lp(R,Cn),1<p<L^p(\mathbb R, \mathbb C^n), 1 < p < \infty中有界,假设扰动由原点处的点相互作用与势V\mathcal V组成,且满足(1+x)V(x)dx<.\int_{-^{\infty}}^{\infty }\, (1+|x|)\, |\mathcal V(x)|\, dx < \infty.进一步,假设(1+xγ)V(x)dx<,γ>52,\int_{-\infty}^{\infty }\, (1+|x|^\gamma) |\mathcal V(x)|\,dx < \infty, \gamma > \frac{5}{2},且散射矩阵在零能量与无穷能量处为单位矩阵,我们证明波算子在L1(R,Cn)L^1(\mathbb R, \mathbb C^n)L(R,Cn)L^\infty(\mathbb R, \mathbb C^n)中有界。我们由半直线上2n×2n2n\times 2n矩阵薛定谔方程的结果导出直线上n×nn\times n矩阵薛定谔方程的结果。

关键词

引用

@article{arxiv.1912.12793,
  title  = {The $L^{p}$ boundedness of the wave operators for matrix Schr\"{o}dinger equations},
  author = {Ricardo Weder},
  journal= {arXiv preprint arXiv:1912.12793},
  year   = {2021}
}

备注

The paper has been edited. Details of some proofs have been added, and the results in the boundedness of the wave operators in $L^1$ and in $L^\infty.$ are stated under slightly stronger conditions in the decay at infinity of the potential