A multilevel blocking approach to the sign problem in real-time quantum Monte Carlo simulations

被引:42
作者
Mak, CH [1 ]
Egger, R
机构
[1] Univ So Calif, Dept Chem, Los Angeles, CA 90089 USA
[2] Univ Freiburg, Fak Phys, D-79104 Freiburg, Germany
关键词
D O I
10.1063/1.478077
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
We propose a novel approach toward the general solution of the sign problem in real-time path-integral simulations. Using a recursive multilevel blocking strategy, this method circumvents the sign problem by synthesizing the phase cancellations arising from interfering quantum paths on multiple tirnescales. A number of numerical examples with one or a few explicit degrees of freedom illustrate the usefulness of the method. (C) 1999 American Institute of Physics. [S0021-9606(99)04701-7].
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页码:12 / 14
页数:3
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