With the time-dependent perturbation theory, the dynamics of a two-level system coupled to an Bose field is revisited.
从含时微扰论的角度出发，重新求解了与玻色场相耦合的两态系统的动力学。
The instantunous change and heat-insulation approximation, and the condition of founding them, are dissused with time dependent perturbation theory in this paper.
本文由含时微扰理论出发，讨论了瞬变近似与绝热近似以及成立的条件。
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