Resonance tunneling in double-well billiards with a point-like scatterer

Coherent tunneling is investigated in rectangular billiards divided into two domains by a classically unclimbable potential barrier. We show that by placing a point-like scatterer inside the billiard, we can control the occurrence and the resonance tunneling rate. The key role of the avoided crossin...

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Bibliographic Details
Published in:Physics letters. A 1997-04, Vol.228 (3), p.151-158
Main Authors: Cheon, Taksu, Shigehara, T.
Format: Article
Language:English
Subjects:
Chaotic tunneling
Delta potential
Diabolical degeneracy
Quantum billiard
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Summary:Coherent tunneling is investigated in rectangular billiards divided into two domains by a classically unclimbable potential barrier. We show that by placing a point-like scatterer inside the billiard, we can control the occurrence and the resonance tunneling rate. The key role of the avoided crossing is stressed.
ISSN:0375-9601
1873-2429
DOI:10.1016/S0375-9601(97)00119-9