Quantum tunneling dynamics in multidimensional systems: a matching-pursuit description.
Quantum tunneling dynamics in multidimensional systems: a matching-pursuit description.
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多维系统中的量子隧道动力学：匹配追踪描述。
DOI：
10.1063/1.1766298
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
V. Batista
中科院分区：
文献类型：
--
作者：
Yinghua Wu;V. Batista
严格的模拟量子隧穿动力学的模型系统与多达20个耦合自由度的报告。模拟实现了最近开发的匹配追求/分裂算子傅立叶变换方法复值相干状态表示的扩展。由此产生的方法递归地应用时间演化算子，定义的特罗特扩展到二阶精度，在动态自适应相干状态表示相结合的匹配追求算法与基于梯度的优化方法的方法产生的。
Rigorous simulations of quantum tunneling dynamics in model systems with up to 20 coupled degrees of freedom are reported. The simulations implement an extension of the recently developed matching-pursuit/split-operator Fourier-transform method to complex-valued coherent-state representations. The resulting method recursively applies the time-evolution operator, as defined by the Trotter expansion to second order accuracy, in dynamically adaptive coherent-state representations generated by an approach that combines the matching-pursuit algorithm with a gradient-based optimization method.