Variational Monte Carlo study of Hubbard model with harmonic confinement

被引：4

作者：

Fujihara, Yusuke ^{[1
]}

Koga, Akihisa ^{[1
]}

Kawakami, Norio ^{[1
]}

机构：

[1] Osaka Univ, Dept Appl Phys, Suita, Osaka 5650871, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 310卷 / 02期

关键词：

optical lattice; variational Monte Carlo; Mott insulator;

D O I：

10.1016/j.jmmm.2006.10.1083

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the ground-state properties of the fermionic Hubbard model with harmonic confinement, by combining the variational Monte Carlo simulations with the new stochastic method proposed by Sorella. By taking the effect of the con. ning potential into account, we demonstrate that the metallic regions coexist with the Mott insulating regions in the system, which is consistent with other numerical results. The role of the intersite doublon-holon correlations in the confined system is also addressed. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：882 / 884

页数：3

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