Direct calculation of resonance energies and widths from the poles of the multichannelmatrix
- 1 February 1984
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 29 (2) , 558-561
- https://doi.org/10.1103/physreva.29.558
Abstract
A numerical method is developed to search the complex momentum plane for the poles of the multichannel matrix. No resonance or continuum wave functions are calculated and no complex basis functions are required. The appropriate Green's function is constructed and used to enforce the asymptotic behavior. Results are obtained for a three-state model problem and compared with results from other techniques.
Keywords
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