Results 91 to 100 of about 148,429 (293)

Anomalous diffusion. A competition between the very large jumps in physical and operational times

, 2010
In this paper we analyze a coupling between the very large jumps in physical and operational times as applied to anomalous diffusion. The approach is based on subordination of a skewed Levy-stable process by its inverse to get two types of operational ...
Stanislavsky, Aleksander, Weron, Karina
core   +1 more source

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

Advanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit, Yifei Yang, Shawn Li, Yu‐Chia Chen, Qi Jia, Jian‐Ping Wang   +5 more
wiley   +1 more source

Diffusing Diffusivity: A Model for Anomalous, yet Brownian, Diffusion [PDF]

Physical Review Letters, 2014
Wang et al. [Proc. Natl. Acad. Sci. U.S.A. 106, 15160 (2009)] have found that in several systems the linear time dependence of the mean-square displacement (MSD) of diffusing colloidal particles, typical of normal diffusion, is accompanied by a non-Gaussian displacement distribution G(x,t), with roughly exponential tails at short times, a situation ...
Mykyta V, Chubynsky, Gary W, Slater
openaire   +2 more sources

Central limit theorem for anomalous scaling due to correlations

, 2007
We derive a central limit theorem for the probability distribution of the sum of many critically correlated random variables. The theorem characterizes a variety of different processes sharing the same asymptotic form of anomalous scaling and is based on
A. I. Khinchin, Attilio L. Stella, B. B. Mandelbrot, B. G. Giraud, B. V. Gnedenko, C. W. Gardiner, Fulvio Baldovin, L. P. Kadanoff, P. Lévy, R. Mantegna   +9 more
core   +1 more source

Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges

Advanced Functional Materials, EarlyView.
Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley   +1 more source

Transient Anomalous Diffusion in Run-and-Tumble Dynamics

Frontiers in Physics, 2019
We study the stochastic dynamics of a particle with two distinct motility states. Each one is characterized by two parameters: one represents the average speed and the other represents the persistence quantifying the tendency to maintain the current ...
M. Reza Shaebani, Heiko Rieger
doaj   +1 more source

A mechanical model of normal and anomalous diffusion

, 2002
The overdamped dynamics of a charged particle driven by an uniform electric field through a random sequence of scatterers in one dimension is investigated. Analytic expressions of the mean velocity and of the velocity power spectrum are presented.
A. Sütő, A.J. Lichtenberg, A.S. Pikovsky, D. Szász, D. Szász, D. Szász, F.-X. Riguidel, F.-X. Riguidel, G. Kaniadakis, H. Kunz, J.P. Bouchaud, R. Ishizaki, R. Livi, S.I. Denisov, T. Geisel, Ya.G. Sinai   +15 more
core   +1 more source

Voltage‐Gated Dedoping of n‐Doped Poly(benzodifurandione) as an Interfacial Protective Mechanism in Electrochromic Devices

Advanced Functional Materials, EarlyView.
Electrochromic polymer stability under overpotential is improved by inserting an ultrathin, transparent n‐doped poly(benzodifurandione) interlayer between indium tin oxide and a poly(3,4‐propylenedioxythiophene)‐based electrochromic polymer. The interlayer supports rapid switching at operating bias, then becomes resistive near +0.8 V to suppress excess
Priyanka Rout, Palak Mehra, Won‐June Lee, Liyan You, Jianguo Mei   +4 more
wiley   +1 more source

Codifference can detect ergodicity breaking and non-Gaussianity

New Journal of Physics, 2019
We show that the codifference is a useful tool in studying the ergodicity breaking and non-Gaussianity properties of stochastic time series. While the codifference is a measure of dependence that was previously studied mainly in the context of stable ...
Jakub Ślęzak, Ralf Metzler, Marcin Magdziarz   +2 more
doaj   +1 more source

Tsallis Relative Entropy and Anomalous Diffusion

Entropy, 2012
In this paper we utilize the Tsallis relative entropy, a generalization of the Kullback–Leibler entropy in the frame work of non-extensive thermodynamics to analyze the properties of anomalous diffusion processes.
Karl Heinz Hoffmann, Janett Prehl, Christopher Essex   +2 more
doaj   +1 more source