Anomaly of specific heat due to kinks |
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| Authors: | K. Sasaki T. Tsuzuki |
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| Affiliation: | Department of Physics, Faculty of Science, Tohoku University, Sendai 980, Japan |
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| Abstract: | Finite temperature corrections to classical kink free energies for the sine-Gordon and ø4 chains are obtained analytically by means of the transfer integral method. These corrections reveal that kink excitations cause a Schottky-type anomaly of specific heat at low temperatures. The numerical results of Schneider and Stoll are explained qualitatively. |
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