EXACT DIAGONALIZATION OF QUANTUM-SPIN MODELS

被引：128

作者：

LIN, HQ

机构：

[1] Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.42.6561

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have developed a technique to replace hashing in implementing the Lanczös method for exact diagonalization of quantum-spin models that enables us to carry out numerical studies on substantially larger lattices than previously studied. We describe the algorithm in detail and present results for the ground-state energy, the first-excited-state energy, and the spin-spin correlations on various finite lattices for spins S=1/2, 1, 3/2, and 2. Results for an infinite system are obtained by extrapolation. We also discuss the generalization of our method to other models. © 1990 The American Physical Society.

引用

页码：6561 / 6567

页数：7

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