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7 papers · 2 filters
Slow relaxation in the two dimensional electron plasma under the strong magnetic field
Ryo Kawahara, Hiizu Nakanishi
We study slow relaxation processes in the point vortex model for the two-dimensional pure electron plasma under the strong magnetic field. By numerical simulations, it is shown tha…
Velocity correlations in the dense granular shear flows: Effects on energy dissipation and normal stress
Namiko Mitarai, Hiizu Nakanishi
We study the effect of pre-collisional velocity correlations on granular shear flow by molecular dynamics simulations of the inelastic hard sphere system. Comparison of the simulat…
Generalized Einstein Relation for Brownian Motion in Tilted Periodic Potential
Hidetsugu Sakaguchi
A generalized Einstein relation is studied for Brownian motion in a tilted potential. The exact form of the diffusion constant of the Brownian motion is compared with the generaliz…
Lattice Model of Sweeping Interface for Drying Process in Water-Granule Mixture
Hiizu Nakanishi, Ryo Yamamoto, Yumino Hayase +1
Based on the invasion percolation model, a lattice model for the sweeping interface dynamics is constructed to describe the pattern forming process by a sweeping interface upon dry…
Efficiency and Fluctuation in Tight-Coupling Model of Molecular Motor
Hidetsugu Sakaguchi
A simple tight-coupling model of a molecular chemical engine is proposed. The efficiency of the chemical engine and its average velocity can be explicitly calculated. The diffusion…
Reaction-Diffusion System in a Vesicle with Semi-Permeable Membrane
Hidetsugu Sakaguchi
We study the Schloegl model in a vesicle with semi-permeable membrane. The diffusion constant takes a smaller value in the membrane region, which prevents the outflow of self-catal…
Global phase diagram and six-state clock universality behavior in the triangular antiferromagnetic Ising model with anisotropic next-nearest-neighbor coupling: Level-spectroscopy approach
Hiromi Otsuka, Yutaka Okabe, Kiyohide Nomura
We investigate the triangular-lattice antiferromagnetic Ising model with a spatially anisotropic next-nearest-neighbor ferromagnetic coupling, which was first discussed by Kitatani…