Continuous-time auxiliary-field Monte Carlo for quantum impurity models

被引：223

作者：

Gull, E. ^{[1
]}

Werner, P. ^{[2
]}

Parcollet, O. ^{[3
]}

Troyer, M. ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland

[2] Columbia Univ, Dept Phys, New York, NY 10027 USA

[3] CEA Saclay, CNRS, IPhT, URA 2306,DSM,CEA,Inst Phys Theor, F-91191 Gif Sur Yvette, France

来源：

EPL | 2008年 / 82卷 / 05期

关键词：

D O I：

10.1209/0295-5075/82/57003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a continuous-time Monte Carlo method for quantum impurity models, which combines a weak-coupling expansion with an auxiliary-field decomposition. The method is considerably more efficient than Hirsch-Fye and free of time discretization errors, and is particularly useful as impurity solver in large cluster dynamical mean-field theory (DMFT) calculations. Copyright (c) EPLA, 2008.

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