Complex Langevin dynamics: criteria for correctness

Complex Langevin dynamics: criteria for correctness
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复杂朗之万动力学:正确性标准

DOI:
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发表时间:
2011
期刊:
影响因子:
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通讯作者:
I. Stamatescu
I. Stamatescu
中科院分区:
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文献类型:
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作者:
G. Aarts;Frank A. J. L. James;E. Seiler;I. Stamatescu

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复朗之万方法是解决各种物理情况下出现的符号问题的主要候选者,特别是有限化学势下的QCD。它最令人烦恼的问题是“收敛到错误的极限”,其中模拟给出了一个定义明确但不正确的结果。在这里,我们首先概述了一个正式的理由的方法,并确定点,它可能会失败。从这些我们得出一个条件,必须满足,以获得正确的结果。然后,我们将这些想法应用到三维SU(3)自旋模型在有限的化学势,并显示出强有力的迹象表明,复杂的朗之万动力学产生正确的结果,在这个理论。
The complex Langevin method is a leading candidate for solving the sign problem occurring in various physical situations, notably QCD at finite chemical potential. Its most vexing problem is ‘convergence to the wrong limit’, where the simulation gives a well defined, but incorrect, result. Here, we first outline a formal justification of the method and identify points at which it might fail. From these we derive a condition that must be satisfied in order for correct results to be obtained. We then apply these ideas to the three-dimensional SU(3) spin model at finite chemical potential and show strong indications that complex Langevin dynamics yields correct results in this theory.
复杂朗之万动力学的收敛性:有限化学势下的三维 XY 模型
DOI: 10.1007/jhep08(2010)020
发表时间: 2010
影响因子: 5.4
作者:
Aarts G
通讯作者: Aarts G
DOI: 10.1103/physrevd.81.054508
发表时间: 2009-12
期刊: Physical Review D
影响因子: 5
作者:
G. Aarts;E. Seiler;I. Stamatescu
通讯作者: G. Aarts;E. Seiler;I. Stamatescu