Results 21 to 30 of about 347,779 (278)

On multiple-particle continuous-time random walks [PDF]

open access: yesJournal of Applied Mathematics, 2004
Scaling limits of continuous-time random walks are used in physics to model anomalous diffusion in which particles spread at a different rate than the classical Brownian motion.
Peter Becker-Kern   +1 more
doaj   +4 more sources

Large deviations in continuous-time random walks [PDF]

open access: yesPhysical Review E, 2021
12 pages, 3 ...
Adrian Pacheco-Pozo, Igor M. Sokolov
openaire   +3 more sources

Chemical Continuous Time Random Walks [PDF]

open access: yesPhysical Review Letters, 2017
12 pages, 2 figures, changed spelling of name of first ...
Tomás Aquino, Marco Dentz
openaire   +4 more sources

Heterogeneous continuous-time random walks [PDF]

open access: yesPhysical Review E, 2018
11 pages, 5 ...
Grebenkov, Denis S., Tupikina, Liubov
openaire   +3 more sources

Evanescent continuous-time random walks [PDF]

open access: yesPhysical Review E, 2013
We study how an evanescence process affects the number of distinct sites visited by a continuous time random walker in one dimension. We distinguish two very different cases, namely, when evanescence can only occur concurrently with a jump, and when evanescence can occur at any time.
Abad, E.   +2 more
openaire   +3 more sources

Nonindependent continuous-time random walks [PDF]

open access: yesPhysical Review E, 2007
The usual development of the continuous time random walk (CTRW) assumes that jumps and time intervals are a two-dimensional set of independent and identically distributed random variables. In this paper we address the theoretical setting of non-independent CTRW's where consecutive jumps and/or time intervals are correlated.
Montero Torralbo, Miquel   +1 more
openaire   +4 more sources

Aging continuous time random walks [PDF]

open access: yesThe Journal of Chemical Physics, 2003
We investigate biased and nonbiased aging continuous time random walks (ACTRW), using fractal renewal theory. For example, a biased ACTRW process describes a Montroll–Weiss CTRW process which starts at time −ta and then at time t=0 a bias is added to the random walk (i.e., an external field is switched on).
Barkai, Eli, Cheng, Yuan-Chung
openaire   +2 more sources

Individuals at the origin in the critical catalytic branching random walk [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2003
A continuous time branching random walk on the lattice $\mathbb{Z}$ is considered in which individuals may produce children at the origin only. Assuming that the underlying random walk is symmetric and the offspring reproduction law is critical we prove ...
Valentin Topchii, Vladimir Vatutin
doaj   +1 more source

Diffusion in Sephadex Gel Structures: Time Dependency Revealed by Multi-Sequence Acquisition over a Broad Diffusion Time Range

open access: yesMathematics, 2021
It has been increasingly reported that in biological tissues diffusion-weighted MRI signal attenuation deviates from mono-exponential decay, especially at high b-values.
Guangyu Dan   +7 more
doaj   +1 more source

Continuous time random walks under Markovian resetting [PDF]

open access: yesPhysical Review E, 2021
Submitted to ...
Vicenç Méndez   +3 more
openaire   +4 more sources

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