IMPROVED TROTTER-LIKE FORMULA

被引：46

作者：

SUZUKI, M

机构：

[1] Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo, 113

来源：

PHYSICS LETTERS A | 1993年 / 180卷 / 03期

关键词：

D O I：

10.1016/0375-9601(93)90701-Z

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new higher-order approximant of the trace of exponential operators is proposed, namely Tr exp[x(A+B)]=Tr{(e(xA/2n)e(xB/n)e(xA/2n))n exp[(x3/8n2)S3]} + O(1/n4), where S3=1/6[2A+B, [B, A]]. This can be applied to quantum Monte Carlo simulations. This new formula has the great merit that the decomposition parameters of higher order are all positive except the term S3.

引用

页码：232 / 234

页数：3

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