氦原子双电离的相空间研究
Double ionization of Helium from a phase space perspective
摘要:
本文的目的有两个方面。首先,我们提出了一个相空间的角度来看,在一维模型的氦长程双电离。动力学模拟与周期冯诺依曼(PvB)方法,一个精确的量子方法的基础上格的相空间高斯。其次,我们通过与多组态时间相关Hartree方法的比较,对该方法进行了基准测试。的PvB方法被发现是更快的比标准的MCTDH代码的动力学计算,并提供更好的精度控制。
英文摘要:
The aim of this paper is two-fold. First, we present a phase space perspective on long range double ionization in a one dimensional model of helium. The dynamics is simulated with the periodic von Neumann (PvB) method, an exact quantum method based on a lattice of phase space Gaussians. Second, we benchmark the method by comparing to the Multiconfiguration Time-dependent Hartree method. The PvB approach is found to be faster than the standard MCTDH code for the dynamics calculations and to give better accuracy control.
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