论文标题
跨时间的开放量子系统衰减
Open quantum systems decay across time
论文作者
论文摘要
对开放量子系统的衰减的描述几乎总是需要几个近似值才能保持拖延。在这里，我们首先重新审视了一些最广泛使用的近似值的含义，域和似乎是矛盾：半集体马尔可道，线性响应理论，Wigner-Wigner-Weisskopf和旋转波浪近似。其次，我们得出了一个有效的时间依赖性衰减理论和与环境线性耦合的开放量子系统的相应广义量子回归关系。该理论涵盖了所有时间尺度，并将马尔可夫人和线性反应作为限制案例。最后，我们将理论应用于量子摩擦现象。
The description of an open quantum system's decay almost always requires several approximations as to remain tractable. Here, we first revisit the meaning, domain and seeming contradictions of a few of the most widely used of such approximations: semi-group Markovianity, linear response theory, Wigner--Weisskopf and rotating-wave approximation. Secondly, we derive an effective time-dependent decay theory and corresponding generalized quantum regression relations for an open quantum system linearly coupled to an environment. This theory covers all timescales, and subsumes the Markovian and linear-response results as limiting cases. Finally, we apply our theory to the phenomenon of quantum friction.
