A Correction to the Hartree-Like Approximation in the Overdamped Sine-Gordon System : Application of a Numerical Method to an Analytic Procedure : General and Mathematical Physics

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概要

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• In the classical overdamped sine-Gordon system, the steady phase current has been estimated by two different methods. One is Buttiker and Landauer's approach. The other is the Hartree-like approximation for the Fokker-Planck equation. In the limit of the small driving field and low temperatures, there is a discrepancy between them. We estimate a correction to the Hartree-like approximation, applying the "steepest descent method" which has been developed in the numerical calculation, to the analytic procedure. It is found that the system is marginal for the Hartree-like approximation to work.

• 理論物理学刊行会の論文
• 1988-05-25

著者

• Nakaya S

  Department Of Physics University Of Tokyo

• Nakaya Shogo

  Department Of Engineering Science Faculty Of Engineering Hokkaido University:department Of Physics F

• NAKAYA Shogo

  Department of Physics, University of Tokyo

関連論文

• Quantum Tunneling of Nonlinear Klein-Gordon System with Dissipation in High External Field
• A Correction to the Hartree-Like Approximation in the Overdamped Sine-Gordon System : Application of a Numerical Method to an Analytic Procedure : General and Mathematical Physics

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