Impurity corrections to the thermodynamics in spin chains using a transfer-matrix DMRG method

被引：27

作者：

Rommer, S ^{[1
]}

Eggert, S ^{[1
]}

机构：

[1] Chalmers Univ Technol, Inst Theoret Phys, S-41296 Gothenburg, Sweden

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.59.6301

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We use the density-matrix renormalization group for transfer matrices to numerically calculate impurity corrections to thermodynamic properties. The method is applied to two impurity models in the spin-1/2 chain, namely a weak link in the chain and an external impurity spin, The numerical analysis confirms the field theory calculations and gives explicit results for the crossover behavior. [S0163-1829(99)01606-9].

引用

页码：6301 / 6308

页数：8

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