| Issue |
Europhys. Lett.
Volume 71, Number 2, July 2005
|
|
|---|---|---|
| Page(s) | 193 - 199 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2004-10538-1 | |
| Published online | 24 June 2005 | |
An intrinsic multi-dimensional mechanism of barrier tunneling
1
The Physics Laboratories, Kyushu Institute of Technology Kawazu 680-4, Iizuka 820-8502, Japan
2
Department of Physics, Faculty of Science and Engineering, Ritsumeikan University Noji-higashi 1-1-1, Kusatsu 525-8577, Japan
3
Center for Nonlinear Phenomena and Complex Systems Université Libre Bruxelles Campus Plaine, CP 231 B-1050 Brussels, Belgium
Received:
24
December
2004
Accepted:
17
May
2005
A new semiclassical mechanism of multi-dimensional tunneling, which originates in the complexified stable and unstable manifolds of the unstable saddle (or unstable periodic orbit) on top of the potential barrier, causes a remarkable plateau-like structure in the tunneling spectrum. Such a mechanism is very universal and works when the instanton mechanism breaks down due to the strong coupling between the degrees of freedom.
PACS: 05.45.Mt – Quantum chaos; semiclassical methods / 03.65.Xp – Tunneling, traversal time, quantum Zeno dynamics / 03.65.Sq – Semiclassical theories and applications
© EDP Sciences, 2005
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