On the Theory of Brownian Motion and Spin Relaxation
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概要
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The Brownian motion of a harmonic oscillator is treated quantum-mechanically and the same method is applied to the relaxation of a spin. The method is quite general and applicable to a system displaced from the equilibrium state by an arbitrary amount initially. The oscillator or the spin is interacting with a thermostat composed of a great number of harmonic oscillators. The equation of motion is solved in operator form taking average as to the thermostat to the second order of the interaction parameter. The Langevin equation, the Kramers-Chandrasekhar equation for a harmonic oscillator and the Bloch equation for a static field are derived.
- 社団法人日本物理学会の論文
- 1959-11-05
著者
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Kotera Takeyasu
Department Of Physics Faculty Of Science Tokyo University Of Education
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Toda Morikazu
Department Of Physics Faculity Of Science Tokyo University Of Education
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Toda Morikazu
Department Of Applied Mathematics Yokohama National University
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- Preface
- Preface
- Damping Behavior and Space Dimensions (Part II. Time Dependent Problems)
- Statistical Dynamics of Systems of Interacting Oscillators (Part II. Time Dependent Problems)
- Diffusion on the Fermi Surface
- One-Dimensional Dual Transformation
- Wave Propagation in Anharmonic Lattices
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