Dilute sine-Gordon soliton gas limit in the statistical mechanics of double sine-Gordon systems期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Dilute sine-Gordon soliton gas limit in the statistical mechanics of double sine-Gordon systems

Affiliation:	1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, P.O. Box 433, Harbin 150001, PR China;2. Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China;1. University of Debrecen, Institute of Physics, H-4010 Debrecen P.O. Box 105, Hungary;2. MTA-DE Particle Physics Research Group, P.O. Box 51, H-4001 Debrecen, Hungary;3. Institute of Nuclear Research, P.O. Box 51, H-4001 Debrecen, Hungary

Abstract:	Using a path integral formulation we have computed the classical free energy density of a double sine-Gordon system. The calculations have been done in the limits of 4π and 2π dilute kink gas. In the latter case a fundamental role is played by the introduction of an internal collection coordinate.

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