dorsal/arxiv
View SchemaA new method for the solution of the Schrodinger equation
| Authors | Paolo Amore, Alfredo Aranda, Arturo De Pace |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0304043 |
| URL | https://arxiv.org/abs/quant-ph/0304043 |
| DOI | 10.1088/0305-4470/37/10/014 |
| Journal | Journal of Physics A 37 (2004) 3515-3525 |
Abstract
We present a new method for the solution of the Schrodinger equation applicable to problems of non-perturbative nature. The method works by identifying three different scales in the problem, which then are treated independently: An asymptotic scale, which depends uniquely on the form of the potential at large distances; an intermediate scale, still characterized by an exponential decay of the wave function and, finally, a short distance scale, in which the wave function is sizable. The key feature of our method is the introduction of an arbitrary parameter in the last two scales, which is then used to optimize a perturbative expansion in a suitable parameter. We apply the method to the quantum anharmonic oscillator and find excellent results.
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"abstract": "We present a new method for the solution of the Schrodinger equation\napplicable to problems of non-perturbative nature. The method works by\nidentifying three different scales in the problem, which then are treated\nindependently: An asymptotic scale, which depends uniquely on the form of the\npotential at large distances; an intermediate scale, still characterized by an\nexponential decay of the wave function and, finally, a short distance scale, in\nwhich the wave function is sizable. The key feature of our method is the\nintroduction of an arbitrary parameter in the last two scales, which is then\nused to optimize a perturbative expansion in a suitable parameter. We apply the\nmethod to the quantum anharmonic oscillator and find excellent results.",
"arxiv_id": "quant-ph/0304043",
"authors": [
"Paolo Amore",
"Alfredo Aranda",
"Arturo De Pace"
],
"categories": [
"quant-ph"
],
"doi": "10.1088/0305-4470/37/10/014",
"journal_ref": "Journal of Physics A 37 (2004) 3515-3525",
"title": "A new method for the solution of the Schrodinger equation",
"url": "https://arxiv.org/abs/quant-ph/0304043"
},
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