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Soliton contribution to correlations in a system of coupled chains

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Zeitschrift für Physik B Condensed Matter

Abstract

A model representing a two- or a three-dimensional array of classical harmonic chains withnonlinear coupling between them is investigated. Physically real systems to which this model applies are discussed. The model exhibits soliton-like nonlinear modes. The influence of these nonlinear modes on the static and the dynamic correlation functions is calculated by generalizing techniques developed for strictly one-dimensional systems. In the static correlation functions these modes lead to minor quantitative changes only. In certain dynamic correlation functions, however, a central peak is found to occur due to the nonlinear modes. The total weight and the width of this peak are calculated for a real spin system.

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Author notes

  1. W. Koch

    Present address: Wolfgang Koch Fraunhofer Institut, ITA, Nottulner Landweg 102, D-4400, Münster-Roxel, Germany

Authors and Affiliations

  1. Institut für Theoretische Physik der Universität, Hannover, Germany

    W. Koch

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  1. W. Koch
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Koch, W. Soliton contribution to correlations in a system of coupled chains. Z. Physik B - Condensed Matter 40, 249–256 (1980). https://doi.org/10.1007/BF01294535

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  • DOI: https://doi.org/10.1007/BF01294535

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