Modified two-potential approach to tunneling problems

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One-body quantum tunneling to continuum is treated via the two-potential approach, dividing the tunneling potential into external and internal parts. We show that corrections to this approach can be minimized by taking the separation radius inside the interval determined by simple expressions. The resulting two-potential approach reproduces the resonance energy and its width, both for narrow and wide resonances. We also demonstrate that, without losing its accuracy, the two-potential approach can be modified to a form resembling the R-matrix theory, yet without any uncertainties of the latter related to the choice of the matching radius.
7 two-column pages, 3 figures, extra-explanation added, Phys. Rev. A, in press

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Nuclear Theory, Condensed Matter, Chaotic Dynamics, Quantum Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/218598

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/nucl-th/0302020
 http://arxiv.org/abs/nucl-th/0302020
 Phys.Rev.A69:042705,2004
 doi:10.1103/PhysRevA.69.042705

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