Fluctuating diffusivity of RNA-protein particles: Analogy with thermodynamics
Abstract
A formal analogy of fluctuating diffusivity to thermodynamics is discussed for messenger RNA molecules fluorescently fused to a protein in living cells. Regarding the average value of the fluctuating diffusivity of such RNA-protein particles as the analog of the internal energy, the analogs of the quantity of heat and work are identified. The Clausius-like inequality is shown to hold for the entropy associated with diffusivity fluctuations, which plays a role analogous to the thermodynamic entropy, and the analog of the quantity of heat. The change of the statistical fluctuation distribution is also examined from a geometric perspective. The present discussions may contribute to a deeper understanding of the fluctuating diffusivity in view of the laws of thermodynamics.
Keywords
Cite
@article{arxiv.2011.13867,
title = {Fluctuating diffusivity of RNA-protein particles: Analogy with thermodynamics},
author = {Yuichi Itto},
journal= {arXiv preprint arXiv:2011.13867},
year = {2021}
}
Comments
19 pages, no figures. The discussion developed further and some references added. Published version