Stochastic Liouville Equation for Weakly Driven System. II : Application to a Quantal Spin : Condensed Matter and Statistical Physics

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概要

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• The time-convolutionless stochastic equation derived in a pervious paper is applied to a quantal spin interacting weakly with its surroundings under decoupled initial condition, up to second order in powers of random perturbations. The transverse and longitudinal susceptibilities are derived from the stationary solutions. The transverse and longitudinal spectra are displayed and are compared with the ones derived from the time-convolution equation in the conventional Markoffian approximation, and with the ones by the method of second-order spin relaxation theory and Kubo' theory. It is shown that the line shape of transverse spectrum is enhanced over the Lorentzian at the resonance region, due to the effects of interference of the external driving field and the random interaction.

• 理論物理学刊行会の論文
• 1988-09-25

著者

• Saeki Mizuhiko

  Department Of Physics Faculty Of Science Tohoku University:(present Address) Kitaitami Works Mitsubi

• Saeki Mizuhiko

  Department Of Physics Ochanomizu University

関連論文

• Non-Equilibrium Thermo-Field Dynamics for a Fourth-Order Hamiltonian(Particles and Fields)
• Calculation of the Migration Energy of the Interstitial in Si and Ge
• Stochastic Liouville Equation for Weakly Driven System. I : TCL Equation and Its Application to a Quantal Oscillator
• Stochastic Liouville Equation for Weakly Driven System. II : Application to a Quantal Spin : Condensed Matter and Statistical Physics
• Transverse Susceptibilities of Ferromagnetic Spin Wave Interacting with Phonon Reservoir(Condensed Matter)

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