Second virial coefficients in soliton free energies

Kazuo Sasaki

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


The low-temperature thermodynamics of a class of one-dimensional nonlinear Klein-Gordon systems (e.g., the sine-Gordon and the 4 models) is studied by means of the transfer-integral method. A general formula for the lowest-order correction to the free energy due to the interaction between solitons is obtained. Physical interpretation of the result is given based on a simple soliton-gas picture.

Original languageEnglish
Pages (from-to)7743-7747
Number of pages5
JournalPhysical Review B
Issue number11
Publication statusPublished - 1986 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


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