SPONTANEOUS SYMMETRY-BREAKING IN QUANTUM FRUSTRATED ANTIFERROMAGNETS

被引：51

作者：

AZARIA, P ^{[1
]}

DELAMOTTE, B ^{[1
]}

MOUHANNA, D ^{[1
]}

机构：

[1] UNIV PARIS 07,PHYS THEOR & HAUTES ENERGIES LAB,F-75251 PARIS 05,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.70.2483

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that the spontaneous symmetry breaking mechanism in quantum antiferromagnets is due to the collapse, in the thermodynamical limit, of an infinite set of excited states onto the ground state. We characterize both the nature and the scaling of the relevant tower of states for the quantum antiferromagnet on the triangular lattice. Comparison with recent numerical results for the S = 1/2 case gives strong support for the existence of long range order in this system.

引用

页码：2483 / 2486

页数：4

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