Quantum dynamics for dissipative systems: A numerical study of the Wigner-Fokker-Planck equation

被引：33

作者：

Zhang, SS ^{[1
]}

Pollak, E ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Chem Phys, IL-76100 Rehovot, Israel

来源：

JOURNAL OF CHEMICAL PHYSICS | 2003年 / 118卷 / 10期

关键词：

D O I：

10.1063/1.1543139

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A study is provided of dynamics and dissipative tunneling in a symmetric quartic double well potential. The numerical solution for the position autocorrelation function obtained through the Wigner-Fokker-Planck equation is compared with numerically exact results of Stockburger and Mak [J. Chem. Phys. 110, 4983 (1999)]. We find that the Wigner-Fokker-Planck dynamics agree well with the numerically exact computations, they account for both quantum coherences as well as quantum tunneling phenomena. This, in contrast to the mixed quantum classical approximation, which does not perform as well. (C) 2003 American Institute of Physics.

引用

页码：4357 / 4364

页数：8

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