A COMPLETE GUTZWILLER PROJECTION FOR QUANTUM HEISENBERG MODELS

被引：1

作者：

CHEN, YC

机构：

[1] Department of Physics, University of Science and Technology of China, Hefei

来源：

PHYSICS LETTERS A | 1993年 / 174卷 / 04期

关键词：

D O I：

10.1016/0375-9601(93)90149-T

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We carry out a complete Gutzwiller projection on Schwinger boson mean-field states of quantum Heisenberg models. For the 2-d spin-1/2 antiferromagnet in a square lattice we obtain analytically a ground state energy of -0.3352J/bond. The spin-spin correlation length behaves as xi is similar to (J/T)1/2 exp (0.670J/T), with J congruent-to 1300 K fitting the neutron scattering data in La2CuO4 best. Furthermore, the resulting pp in the bosonic spectrum may be linear in T.

引用

页码：329 / 334

页数：6

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