Istituto di Biofisica     
Latka M., Grigolini P., West B. J. Control of dynamical tunneling in a bichromatically driven pendulum. In: Physical Review E, vol. 50 (5) pp. R3299 - R3302. American Physical Society, 1994.
We demonstrate that the avoided level crossing between the Floquet state associated with the chaotic part of classical phase space and a member of the quasidegenerate doublet may lead to the enhancement of the doublet splitting by several orders of magnitude. As a result of this interaction the two-level tunneling dynamics is replaced by the more intricate dynamics involving three states. It is shown that three-level tunneling is much more robust against symmetry breaking perturbations than is ordinary tunneling.
DOI: 10.1103/PhysRevE.50.R3299
Subject Dynamical tunneling

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