Comment on the Direct-Matrix Solution of a Singular Lippmann—Schwinger Equation
- 1 January 1973
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 7 (1) , 365-367
- https://doi.org/10.1103/physreva.7.365
Abstract
A discussion of the numerical performance of singular integrals appearing in the Fredholm series leads to a procedure for obtaining the Fredholm determinant over a continuous range of energies using a single fixed quadrature mesh. The same analysis shows that the singular momentum-space Lippmann—Schwinger equation may be inverted by direct-matrix methods with no error arising from the singularity.Keywords
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