Non-Gaussian fluctuations resulting from power-law trapping in a lipid bilayer

Takuma Akimoto, Eiji Yamamoto, Kenji Yasuoka, Yoshinori Hirano, Masato Yasui

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Abstract

Anomalous diffusion in lipid bilayers is usually attributed to viscoelastic behavior. We compute the scaling exponent of relative fluctuations of the time-averaged mean square displacement in a lipid bilayer, by using a molecular dynamics simulation. According to the continuous time random walk theory, this exponent indicates non-Gaussian behavior caused by a power-law trapping time. Our results provide the first evidence that a lipid bilayer has not only viscoelastic properties but also trapping times distributed according to a power law.

Original languageEnglish
Article number178103
JournalPhysical Review Letters
Volume107
Issue number17
DOIs
Publication statusPublished - 2011 Oct 20

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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