Analytic formulations of the density matrix renormalization group

被引：58

作者：

MartinDelgado, MA ^{[1
]}

Sierra, G ^{[1
]}

机构：

[1] CSIC,INST MATEMAT & FIS FUNDAMENTAL,E-28006 MADRID,SPAIN

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 1996年 / 11卷 / 17期

关键词：

D O I：

10.1142/S0217751X96001516

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We present two new analytic formulations of the density matrix renormalization group (DMRG) method. In these formulations we combine the block renormalization group (BRG) procedure with the variational and Fokker-Planck methods. The BRG method is used to reduce the lattice size while the latter are used to construct approximate target states to compute the block density matrix. We apply our DMRG methods to the Ising model in a transverse field (ITF model) and compute several of its critical properties, which are then compared with the old BRG results.

引用

页码：3145 / 3174

页数：30

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