Drude耗散的优化递阶运动方程
Optimized hierarchical equations of motion for Drude dissipation
摘要：
对Drude耗散的分层运动理论方程进行了优化，在数值传播之前提出了一个方便的收敛准则。理论构造基于Padé谱分解，该谱分解已被证明是量子分布函数的最佳极点求和方案。在{ \em apriori}收敛准则下得到的层次动力学的例子与基准自旋玻色子系统，以及模型激子二聚体系统的瞬态吸收和二维光谱。
英文摘要：
The hierarchical equations of motion theory for Drude dissipation is optimized, with a convenient convergence criterion proposed in advance of numerical propagations. The theoretical construction is on basis of a Padé spectrum decomposition that has been qualified to be the best sum-over-poles scheme for quantum distribution function. The resulting hierarchical dynamics under the {\em apriori} convergence criterion are exemplified with a benchmark spin-boson system, and also the transient absorption and two-dimensional spectroscopy of a model exciton dimer system.
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