10 citations · 49 across the 12 of their papers we have counts for
4 papers · 1 filter
Brownian Yet Non-Gaussian Diffusion of a Light Particle in Heavy Gas: Lorentz Gas Based Analysis
Fumiaki Nakai, Takashi Uneyama
Non-Gaussian diffusion was recently observed in gas mixtures with mass and fraction contrast [F. Nakai et al, Phys. Rev. E 107, 014605 (2023)]. The mean square displacement of a mi…
Increase in rod diffusivity emerges even in Markovian nature
Fumiaki Nakai, Martin Kröger, Takato Ishida +3
Rod-shaped particles embedded in certain matrices have been reported to exhibit an increase in their center of mass diffusivity upon increasing the matrix density. This increase ha…
Fluctuating Diffusivity Emerges even in Binary Gas Mixtures
Fumiaki Nakai, Yuichi Masubuchi, Yuya Doi +2
Diffusivity in some soft matter and biological systems changes with time, called the fluctuating diffusivity. In this work, we propose a novel origin for fluctuating diffusivity ba…
Short time dynamics of tracer in ideal gas
Fumiaki Nakai, Yuichi Masubuchi, Takashi Uneyama
A small tagged particle immersed in a fluid exhibits the Brownian motion and diffuses at the long-time scale. Meanwhile, at the short-time scale, the dynamics of the tagged particl…