DMRG studies of critical SU(N) spin chains

被引：62

作者：

Fuehringer, Max ^{[1
]}

Rachel, Stephan ^{[1
]}

Thomale, Ronny ^{[1
]}

Greiter, Martin ^{[1
]}

Schmitteckert, Peter ^{[2
]}

机构：

[1] Univ Karlsruhe, Inst Theorie Kondensierten Mat, D-76128 Karlsruhe, Germany

[2] Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany

来源：

ANNALEN DER PHYSIK | 2008年 / 17卷 / 12期

关键词：

Integrable spin Hamiltonian; DMRG; SU(N) spin models;

D O I：

10.1002/andp.200810326

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The DMRG method is applied to integrable models of antiferromagnetic spin chains for fundamental and higher representations of SU(2), SU(3). and SU(4). From the low energy spectrum and the entanglement entropy, we compute the central charge and the primary field scaling dimensions. These parameters allow us to identify uniquely the Wess-Zumino-Witten models capturing the low energy sectors of the models we consider. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：922 / 936

页数：15

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