منابع مشابه
Subdiffusion in time-averaged, confined random walks.
Certain techniques characterizing diffusive processes, such as single-particle tracking or molecular dynamics simulation, provide time averages rather than ensemble averages. Whereas the ensemble-averaged mean-squared displacement (MSD) of an unbounded continuous time random walk (CTRW) with a broad distribution of waiting times exhibits subdiffusion, the time-averaged MSD, delta2, does not. We...
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In this paper, we propose a method to distinguish between mechanisms leading to single molecule subdiffusion in confinement. We show that the method of p-variation, introduced in the recent paper [M. Magdziarz, Phys. Rev. Lett. 103, 180602 (2009)], can be successfully applied also for confined systems. We propose a test which allows distinguishing between heavy-tailed continuous-time random wal...
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Subdiffusive motion of tracer particles in complex crowded environments, such as biological cells, has been shown to be widespread. This deviation from Brownian motion is usually characterized by a sublinear time dependence of the mean square displacement (MSD). However, subdiffusive behavior can stem from different microscopic scenarios that cannot be identified solely by the MSD data. In this...
متن کاملFinite-size scaling study of the vapor-liquid critical properties of confined fluids: Crossover from three dimensions to two dimensions.
We perform histogram-reweighting grand canonical Monte Carlo simulations of the Lennard-Jones fluid confined between two parallel hard walls and determine the vapor-liquid critical and coexistence properties in the range of sigma<or=H<or=6sigma and 10sigma<or=L(x),L(y)<or=28sigma, where H is the wall separation, L(x)=L(y) is the system size and sigma is the characteristic length. By matching th...
متن کاملStatistical mechanics of confined binary system: Comparison of three and two dimensions
We have used a toy model to study the behaviour of confined binary systems in 2D and compare it with previously known result in 3D. In the case of 2D, in which canonical distribution exists only above a critical temperature, we evaluate the exact form of partition function for this system and compare the exact partition function with the mean field partition function for the case of two-particl...
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ژورنال
عنوان ژورنال: Chinese Physics B
سال: 2014
ISSN: 1674-1056
DOI: 10.1088/1674-1056/23/11/110206