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- Ueda Masahiko

# Ueda Masahiko

Affiliate Master
Yamaguchi University

Id (<span class="translation_missing" title="translation missing: en.view.desc">Desc</span>)

Journal of the Physical Society of Japan Volume 91 Issue 8
pp. 084801 -

published_at 2022-07-11

Zero-determinant strategies are a class of memory-one strategies in repeated games which unilaterally enforce linear relationships between payoffs. It has long been unclear for what stage games zero-determinant strategies exist. We provide a necessary and sufficient condition for the existence of zero-determinant strategies. This condition can be interpreted as the existence of two different actions which unilaterally adjust the total value of a linear combination of payoffs. A relation between the class of stage games where zero-determinant strategies exist and other class of stage games is also provided.

Journal of Statistical Mechanics: Theory and Experiment Volume 2016
pp. 023206 -

published_at 2016-02-25

We study the diffusion of Brownian particles in a Gaussian random velocity field with short memory. By extending the derivation of an effective Fokker–Planck equation for the Lanvegin equation with weakly colored noise to a random velocity-field problem, we find that the effect of thermal noise on particles is suppressed by the existence of memory. We also find that the renormalization effect for the relative diffusion of two particles is stronger than that for single-particle diffusion. The results are compared with those of molecular dynamics simulations.

Journal of the physical society of Japan Volume 91
pp. 054804 -

published_at 2022-04-21

Applied mathematics and computation Volume 409
pp. 126370 -

published_at 2021-11-15

Royal Society open science Volume 8 Issue 5
pp. 202186 -

published_at 2021-05-26

Journal of the Physical Society of Japan Volume 90 Issue 2
pp. 025002 -

published_at 2021-01-27