Critical behavior of the S=3/2 antiferromagnetic Heisenberg chain

被引：83

作者：

Hallberg, K

Wang, XQG

Horsch, P

Moreo, A

机构：

[1] MAX PLANCK INST FESTKORPERFORSCH,D-70569 STUTTGART,GERMANY

[2] FLORIDA STATE UNIV,MARTECH,TALLAHASSEE,FL 32306

[3] FLORIDA STATE UNIV,NATL HIGH MAGNET FIELD LAB,DEPT PHYS,TALLAHASSEE,FL 32306

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.76.4955

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using the density-matrix renormalization-group technique we study the long-wavelength properties of the spin S = 3/2 nearest-neighbor Heisenberg chain. We obtain an accurate value for the spin velocity upsilon = 3.87 +/- 0.02, in agreement with experiment. Our results show conclusively that the model belongs to the same universality class as the S = 1/2 Heisenberg chain, with a conformal central charge c = 1 and critical exponent eta = 1.

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页码：4955 / 4958

页数：4

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