Correlation Functions of the Non-Ideal Gas of Sine-Gordon Solitons

  • Kazuo Sasaki
Conference paper
Part of the Springer Series in Synergetics book series (SSSYN, volume 30)


Extensive studies on statistical mechanics of one-dimensional soliton-bearing systems have revealed that solitons, as well as linear excitations such as phonons, can be considered as elementary excitations [1]. Soliton contributions to various thermodynamic quantities and correlation functions have been calculated within the ideal soliton gas approximation [2,3,4]. In this theory the soliton-phonon interaction is taken into account, and the interaction between solitons is neglected. This approximation is valid at low temperatures. Recently the importance of the soliton-soliton interaction has been implied in connection with the anomaly of specific heat [5,6]. In this paper we study the effect of the interaction between solitons on various correlation functions of the sine-Gordon model. These quantities are of particular interest, since they are accessible by neutron scattering and NMR experiments on one-dimensional magnets such as CsNiF3 and (CH3)4NMnCl3 (TMMC).


Correlation Function Elementary Excitation Virial Expansion Fundamental Scientific Research Soliton Motion 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1985

Authors and Affiliations

  • Kazuo Sasaki
    • 1
  1. 1.Department of Physics, Faculty of ScienceTohoku UniversitySendai 980Japan

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