Interrelation between variational principles for scattering amplitudes and generalized R-matrix theory.
Interrelation between variational principles for scattering amplitudes and generalized R-matrix theory.
复制标题
散射振幅变分原理与广义 R 矩阵理论之间的相互关系。
DOI：
10.1103/physreva.36.2061
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
Barry I. Schneider
中科院分区：
文献类型：
--
作者：
C. W. McCurdy;T. Rescigno;Barry I. Schneider
We establish a connection between the Kohn variational principle, with (complex) outgoing-wave boundary conditions, and the Kapur-Peierls form of the R-matrix theory. We show that the complex Kohn method, unlike the usual Kohn method, does not suffer from the problem of spurious singularities. We also discuss a generalization that allows the calculation of scattering cross sections over a continuous range of energies from a single diagonalization of the Hamiltonian. Several numerical examples are presented.
