Journal of Physics: Condensed Matter 7(26) 5045-5051 1995年 [査読有り]
We study the magnetic properties of the one-dimensional Hubbard model under fixed chemical potential. By using derivatives of the Lieb-Wu equation, the magnetization curve at zero temperature is obtained for various fixed band fillings and/or chem...
Journal of Physics: Condensed Matter 7(41) 7991-7996 1995年 [査読有り]
It has been shown that there exists an additional magnetic phase transition of the magnetization curve for the S=1 SU(3) antiferromagnetic spin chain at zero temperature. As a the magnetic field decreases from the saturation field, there is a phas...
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 63(12) 4269-4273 1994年12月 [査読有り]
We study the integrable SU(M) and SUq(M) quantum spin chains in the high-magnetic-field region at zero temperature. For M=4 we found second-order phase transitions at two different fields, H-1 and H-2. At both transition points, the magnetization ...
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 61(7) 2161-2164 1992年7月 [査読有り]
For the integrable long-range SU(M) spin chain, the exact ground-state wave function is constructed for arbitrary irreducible representation of the permutation group.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL 41(33) 332004 2008年8月
The hyperparameter in image restoration by the Bayes formula is an important quantity. This communication shows a physical method for the estimation of the hyperparameter without approximation. For artificially generated images by prior probabilit...
We investigate a stability of a lamellar domain in phase-separating binary fluids under an external flow. Using the Navier-Stokes and the Cahn-Hilliard equations, we take into account effects of diffusion and surface tension at an interface. Stabi...
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