Simulations of nonlinear quantum damping using the positive P representation.
Simulations of nonlinear quantum damping using the positive P representation.
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使用正 P 表示来模拟非线性量子阻尼。
DOI：
10.1103/physreva.39.3511
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
Gardiner
中科院分区：
文献类型：
--
作者：
Smith;Gardiner
本文对数值模拟技术进行了广泛的研究，并将其应用于由正P表示得到的方程组的解。我们在这些研究中引入的模型具有直接的物理解释的明显优势。在这些模拟中，我们经历了其他作者指出的发散轨迹或“尖峰”；然而，由于方程的简单性，我们能够对这些峰值进行分类和解释。最后，我们报告了一些模拟结果中令人不安的异常，这表明使用正P表示可能存在问题。
We present here an extensive study of the technique of numerical simulations, applied to the solution of a system of equations obtained by the positive P representation. The model we introduce to aid in these investigations has the distinct advantage of an immediate physical interpretation. In these simulations we experience the divergent trajectory or ‘‘spike,’’noted by other authors; however, due to the simplicity of our equations, we are able to categorize and explain these spikes. Finally, we report a disturbing anomaly in some of the simulation results which indicates a possible problem with the use of the positive P representation.