SOLVABLE SPIN-GLASS OF QUANTUM ROTORS

被引：133

作者：

YE, J ^{[1
]}

SACHDEV, S ^{[1
]}

READ, N ^{[1
]}

机构：

[1] YALE UNIV,DEPT APPL PHYS,NEW HAVEN,CT 06520

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 25期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.70.4011

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We examine a model of M-component quantum rotors coupled by Gaussian-distributed random, infinite-range exchange interactions. A complete solution is obtained at M = infinity in the spin-glass and quantum-disordered phases. The quantum phase transition separating them is found to possess logarithmic violations of scaling, with no farther modifications to the leading critical behavior at any order in 1/M; this suggests that the critical properties of the transverse-field Ising model (believed to be identical to the M --> 1 limit) axe the same as those of the M = infinity quantum rotors.

引用

页码：4011 / 4014

页数：4

共 25 条

[1]

AEPPLI G, UNPUB P KAGOME WORKS

[2] SOME NUMERICAL RESULTS ON KONDO PROBLEM AND INVERSE SQUARE ONE-DIMENSIONAL ISING MODEL [J].