Publication
Physical Review A
Paper

Variational methods for multichannel scattering. II. New variant of optimized anomaly-free method and restricted interpolated anomaly-free method

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Abstract

Several methods designed to avoid computational anomalies in the multichannel variational formalism of Kohn are considered. Two new methods are proposed. A new variant of the optimized anomaly-free method ensures that the computed K-matrix is symmetric. This method avoids spurious singularities but may give results that vary discontinuously with energy. A second new method, the restricted interpolated anomaly-free method, avoids both singularities and discontinuities, and produces a symmetric K matrix. Two-channel model calculations show that both new methods have accuracy comparable to the earlier anomaly-free and optimized anomaly-free methods. © 1978 The American Physical Society.

Date

01 Sep 1978

Publication

Physical Review A

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