Variational study of hard-core bosons in a two-dimensional optical lattice using projected entangled pair states

被引：208

作者：

Murg, V.

Verstraete, F.

Cirac, J. I.

机构：

[1] Max Planck Inst Quantenop, D-85748 Garching, Germany

[2] Univ Vienna, Fak Phys, A-1090 Vienna, Austria

来源：

PHYSICAL REVIEW A | 2007年 / 75卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.75.033605

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have studied the system of hard-core bosons on a two-dimensional optical lattice using a variational algorithm based on projected entangled-pair states. We have investigated the ground-state properties of the system as well as the responses of the system to sudden changes in the parameters. We have compared our results to mean-field results based on a Gutzwiller ansatz.

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页数：8

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