The self-consistent renormalization theory of the itinerant electron model was the first theory to show that the Curie-Weiss behavior of the magnetic susceptibility is not peculiar to the localized model. But the theory was justified on the basis ...

Journal of Magnetism and Magnetic Materials 140-144 191-192 Jan 1995

The susceptibility is studied by the inversion method, which advances the Stoner theory systematically. This is because the method is a kind of perturbation theory and its first order calculation reproduces the mean-field theory. The second order ...

Using the field-theoretical formalism, nonequilibrium thermodynamics is discussed where the volume V(t) is changing with time. The time-dependent boundary condition on the wave function is handled by introducing the time-independent mode variables...