Matrix product states represent ground states faithfully

被引：526

作者：

Verstraete, F ^{[1
]}

Cirac, JI

机构：

[1] CALTECH, Inst Quantum Informat, Pasadena, CA 91125 USA

[2] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.73.094423

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We quantify how well matrix product states approximate exact ground states of one-dimensional quantum spin systems as a function of the number of spins and the entropy of blocks of spins. We also investigate the convex set of local reduced density operators of translational invariant systems. The results give a theoretical justification for the high accuracy of renormalization group algorithms and justifies their use even in the case of critical systems.

引用

页数：8

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