Phys. Rev. A 64, 062708 (2001) [3 pages]Double pole of the S matrix in a double-well systemReceived 11 February 2001; published 15 November 2001 We discuss the interaction between two resonant states in a quantum double-well structure. The behavior 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. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.64.062708
DOI:
10.1103/PhysRevA.64.062708
PACS:
03.65.Nk, 73.23.-b
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