THE D-DIMENSIONAL SINE-GORDON MODEL IN THE PRESENCE OF RANDOM-FIELDS

被引：1
|
作者：
DECESARE, L
MERCALDO, L
机构：
[1] UNIV SALERNO, SMSA, I-84081 BARONISSI, ITALY
[2] CNR, GRP NAZL STRUTTURRA MAT, UNITA SALERNO, SALERNO, ITALY
[3] INST NAZL FIS NUCL, SEZ NAPOLI, NAPLES, ITALY
来源：
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 1991年 / 170卷 / 03期
关键词：
D O I：
10.1016/0378-4371(91)90012-2
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the properties of a d-dimensional sine-Gordon model in the presence of a random field that couples linearly to the sine-Gordon field using the Wilson renormalization group approach via the replica trick. No stable fixed point is found for dimensionalities d < 4, corresponding to the absence of long-range order. Such a situation seems to occur in experiments on impurity-pinned charge-density-wave systems in which a "glassy behaviour" appears to be induced by arbitrarily weak symmetry-breaking randomness.
引用
收藏
页码：663 / 672
页数：10
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