Nonadiabatic Transition Probabilities in the Presence of Strong Dissipation at an Avoided Level Crossing Point

摘要

Dissipative effects on the nonadiabatic transition for the two and threelevel systems are studied. When the system is affected by a strong dissipationthrough the diabatic states, the exact transition probability is enumeratedmaking use of the effective master equation. In the two-level system, weconsider the case where the external field is swept from not only a negativelarge value but also from the resonant field, and the exact transitionprobabilities in these cases are derived. The transition probabilities arederived for the three-level system where the three diabatic states form onlyone avoided level crossing point. These probabilities are compared with the onein the pure quantum case obtained by Carroll and Hioe.