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Non-Gaussian normal diffusion in a fluctuating corrugated channel
2019
Physical Review Research
A Brownian particle floating in a narrow corrugated (sinusoidal) channel with fluctuating cross section exhibits non-Gaussian normal diffusion. Its displacements are distributed according to a Gaussian law for very short and asymptotically large observation times, whereas a robust exponential distribution emerges for intermediate observation times of the order of the channel fluctuation correlation time. For intermediate to large observation times the particle undergoes normal diffusion with
doi:10.1103/physrevresearch.1.033003
fatcat:55kjtu25zzaaboctc7lvegxifq