A fluctuating environment as a source of periodic modulation

Details A fluctuating environment as a source of periodic modulation A fluctuating environment as a source of periodic modulation

2006-09-22

arxiv.org/abs/cond-mat/0609593v3

Physics

Condensed Matter

Soft Condensed Matter

13 pages, 4 figures. Accepted for publication on Chem. Phys. Lett

Scientific paper

10.1016/j.cplett.2007.03.013

We study the intermittent fluorescence of a single molecule, jumping from the "light on" to the "light off" state, as a Poisson process modulated by a fluctuating environment. We show that the quasi-periodic and quasi-deterministic environmental fluctuations make the distribution of the times of sojourn in the "light off" state depart from the exponential form, and that their succession in time mirrors environmental dynamics. As an illustration, we discuss some recent experimental results, where the environmental fluctuations depend on enzymatic activity.

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