Canonical formulation of quantum tunneling with dissipation
Kazuo FujikawaDepartment of Physics, Kyoto University, Kyoto 606, JapanSatoshi IsoDepartment of Physics, Kyoto University, Kyoto 606, JapanMisao SasakiDepartment of Physics, Kyoto University, Kyoto 606, JapanHiroshi SuzukiDepartment of Physics, Kyoto University, Kyoto 606, Japan
1992en
ABI
Abstract
The tunneling in a double-well potential with dissipation is formulated without referring to instantons. This formulation, in the domain of small dissipation, goes beyond the instanton approximation. Several applications of this formulation for the Ohmic case are presented, and we show that the virtual mixing of excited states induced by dissipative interactions tends to enhance the tunneling rate. This enhancement effect becomes dominant for a super-Ohmic case.
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