Hermitian symplectic geometry and extension theory

Hermitian symplectic geometry and extension theory
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厄米辛几何与可拓理论

DOI:
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发表时间:
2000
期刊:
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通讯作者:
M. Harmer
M. Harmer
中科院分区:
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文献类型:
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作者:
M. Harmer

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在这里,我们给简要说明厄米辛空间,表明它们是紧密相连的对称以及自伴扩展的对称算子。此外,我们找到了一个明确的参数化的拉格朗日格拉斯曼的酉矩阵。这使我们能够明确地描述所有的自伴边界条件的薛定谔算子的图中的一个酉矩阵。我们表明,散射矩阵的渐近性可以简单地表示在这个酉矩阵。
Here we give brief account of Hermitian symplectic spaces, showing that they are intimately connected to symmetric as well as self-adjoint extensions of a symmetric operator. Furthermore, we find an explicit parametrization of the Lagrange Grassmannian in terms of the unitary matrices . This allows us to explicitly describe all self-adjoint boundary conditions for the Schrodinger operator on the graph in terms of a unitary matrix. We show that the asymptotics of the scattering matrix can be expressed simply in terms of this unitary matrix.