dorsal/arxiv
View SchemaPhase equivalent chains of Darboux transformations in scattering theory
| Authors | Boris F. Samsonov, Fl. Stancu |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0204112 |
| URL | https://arxiv.org/abs/quant-ph/0204112 |
| DOI | 10.1103/PhysRevC.66.034001 |
| Journal | Phys.Rev. C66 (2002) 034001 |
Abstract
We propose a procedure based on phase equivalent chains of Darboux transformations to generate local potentials satisfying the radial Schr\"odinger equation and sharing the same scattering data. For potentials related by a chain of transformations an analytic expression is derived for the Jost function. It is shown how the same system of $S$-matrix poles can be differently distributed between poles and zeros of a Jost function which corresponds to different potentials with equal phase shifts. The concept of shallow and deep phase equivalent potentials is analyzed in connection with distinct distributions of poles. It is shown that phase equivalent chains do not violate the Levinson theorem. The method is applied to derive a shallow and a family of deep phase equivalent potentials describing the $^1S_0$ partial wave of the nucleon-nucleon scattering.
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"abstract": "We propose a procedure based on phase equivalent chains of Darboux\ntransformations to generate local potentials satisfying the radial\nSchr\\\"odinger equation and sharing the same scattering data. For potentials\nrelated by a chain of transformations an analytic expression is derived for the\nJost function. It is shown how the same system of $S$-matrix poles can be\ndifferently distributed between poles and zeros of a Jost function which\ncorresponds to different potentials with equal phase shifts. The concept of\nshallow and deep phase equivalent potentials is analyzed in connection with\ndistinct distributions of poles. It is shown that phase equivalent chains do\nnot violate the Levinson theorem. The method is applied to derive a shallow and\na family of deep phase equivalent potentials describing the $^1S_0$ partial\nwave of the nucleon-nucleon scattering.",
"arxiv_id": "quant-ph/0204112",
"authors": [
"Boris F. Samsonov",
"Fl. Stancu"
],
"categories": [
"quant-ph",
"nucl-th"
],
"doi": "10.1103/PhysRevC.66.034001",
"journal_ref": "Phys.Rev. C66 (2002) 034001",
"title": "Phase equivalent chains of Darboux transformations in scattering theory",
"url": "https://arxiv.org/abs/quant-ph/0204112"
},
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