Transparency Resonances and Bound States of the $δ^\prime$ Junction

Details Transparency Resonances and Bound States of the $δ^\prime$ Junction Transparency Resonances and Bound States of the $δ^\prime$ Junction

2002-04-24

arxiv.org/abs/math-ph/0204045v1

Physics

Mathematical Physics

6 figures, submitted to PRL

Scientific paper

Exact positive and negative energy solutions for the eigenvalue problem of the Schr\"{o}dinger equation in one dimension with a $\delta^\prime$ interaction are found and analyzed. An infinite series of transparency resonance levels in the strength of this interaction is shown to exist. This result is against the actual belief that the $\delta^\prime$ potential acts as a totally reflecting wall. A finite number of bound states is obtained, contrary to the previous result on the existence of only one bound state. A new effect of a {\it negative stepwise} drop in the electron density across the $\delta^\prime$ junction is observed. The solutions are also applied to the propagation of the electromagnetic field in dielectric media.

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