The d-dimensional sine-Gordon model in the presence of random fields

L. De Cesare and L. Mercaldo

Physica A: Statistical Mechanics and its Applications, 1991, vol. 170, issue 3, 663-672

Abstract: 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.

Date: 1991
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:170:y:1991:i:3:p:663-672

DOI: 10.1016/0378-4371(91)90012-2

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