Enhanced Diffusion in a Model of Molecular Motors with Potential Switching

Ryota Shinagawa, Kazuo Sasaki

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Diffusion enhancement is a phenomenon in which the diffusion coefficient of a system is increased by an external force and it becomes larger than that of the force-free diffusion in thermal equilibrium. It is known that this phenomenon occurs for a Brownian particle in a periodic potential under a constant external force. Recently, it was found that diffusion enhancement also occurred in a biological molecular motor, whose moving part could move itself by switching the potentials generated by the other parts. It was shown that the diffusion coefficient exhibited peaks as a function of a constant external force. Here, we report the occurrence of an additional peak and investigate the condition governing its appearance.

Original languageEnglish
Article number1940005
JournalFluctuation and Noise Letters
Issue number2
Publication statusPublished - 2019 Jun 1


  • Diffusion coefficient
  • diffusion enhancement
  • molecular motors

ASJC Scopus subject areas

  • Mathematics(all)
  • Physics and Astronomy(all)


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