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Interference of resonances and the double-pole of the S-matrix in a double well system

Wim Vanroose
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Abstract

We discuss the interaction between two resonant states in a quantum double-well structure. The behaviour of the resonant states depends on the coupling between the wells, i.e. the height and width of the barrier that separates them. We distinguish a region with resonant tunneling and a region where the two resonances repel each other. The transition between the two regions is marked by a double pole of the S-matrix.

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Wim Vanroose. 2001-02-11. Interference of resonances and the double-pole of the S-matrix in a double well system. https://doi.org/10.1103/physreva.64.062708

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