9710049v1

related topics
{energy, state, states}
{equation, function, exp}
{wave, scattering, interference}
{let, theorem, proof}
{cos, sin, state}

Bound and Unbound Wave Functions at Short Distances

Goeran Faeldt, Colin Wilkin

abstract: There exists a simple relationship between a quantum-mechanical bound-state wave function and that of nearby scattering states, when the scattering energy is extrapolated to that of the bound state. This relationship is demonstrated numerically for the case of a spherical well potential and analytically for this and other soluble potentials. Provided that the potential is of finite range and that the binding is weak, the theorem gives a useful approximation for the short-distance behaviour of the scattering wave functions. The connection between bound and scattering-state perturbation theory is established in this limit.

oai_identifier:
oai:arXiv.org:quant-ph/9710049
categories:
quant-ph
comments:
13 pages, Latex
doi:
10.1119/1.18987
arxiv_id:
quant-ph/9710049
report_no:
TSL/ISV-97-0188
created:
1997-10-21

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