Fluctuating diffusivity in a Langevin framework produces an observation-time-induced crossover in effective diffusion coefficient whose temperature location shifts systematically with measurement duration.
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cond-mat.stat-mech 2years
2025 2verdicts
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Stochastic diffusion coefficients in 1D semi-infinite domain with absorbing boundary lead to certain absorption, enhanced early arrival efficiency over ensemble average, and for ergodic cases diverging mean FPT with convergence to Lévy-Smirnov distribution.
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Observation-Time-Induced Crossover from Fluctuating Diffusivity
Fluctuating diffusivity in a Langevin framework produces an observation-time-induced crossover in effective diffusion coefficient whose temperature location shifts systematically with measurement duration.
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First passage time properties of diffusion with a broad class of stochastic diffusion coefficients
Stochastic diffusion coefficients in 1D semi-infinite domain with absorbing boundary lead to certain absorption, enhanced early arrival efficiency over ensemble average, and for ergodic cases diverging mean FPT with convergence to Lévy-Smirnov distribution.