FLUID DIMER CRITICAL-POINT IN S=1/2 ANTIFERROMAGNETIC HEISENBERG CHAIN WITH NEXT NEAREST NEIGHBOR INTERACTIONS

被引：515

作者：

OKAMOTO, K

NOMURA, K

机构：

[1] Department of Physics, Faculty of Science, Tokyo Institute of Technology, Meguro, Tokyo

来源：

PHYSICS LETTERS A | 1992年 / 169卷 / 06期

关键词：

D O I：

10.1016/0375-9601(92)90823-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We numerically investigate the critical value alpha(c) of the fluid-dimer transition in the ground state of the S = 1/2 antiferromagnetic Heisenberg chain with next nearest neighbor interactions, H=JSIGMA (S(j).S(j+1) + alphaS(j).S(j+2)) with J > 0 and alpha > 0. With the help of the conformal field theory, we can estimate alpha(c)=0.2411 +/- 0.0001.

引用

页码：433 / 437

页数：5

共 16 条

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