Two-dimensional infinite-system density-matrix renormalization-group algorithm

被引：16

作者：

Henelius, P ^{[1
]}

机构：

[1] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

[2] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 13期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.60.9561

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It has proved difficult to extend the density-matrix renormalization-group technique to large two-dimensional systems. I here present an approach where the calculation is done directly in two dimensions. This makes it possible to use an infinite-system method, and the fixed point in two dimensions is Studied. By applying several related blocking schemes to the two-dimensional Heisenberg model I find that there exists an algorithm for which the energy per site decreases monotonically as the system size increases, thereby showing the potential feasibility of this method. [S0163-1829(99)08937-7].

引用

页码：9561 / 9565

页数：5

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