Results 211 to 220 of about 17,135,752 (243)

Dynamical continuous time random walk

The European Physical Journal B, 2015
We consider a continuous time random walk model in which each jump is considered to be dynamical process. Dissipative launch velocity and hopping time in each jump is the key factor in this model. Within the model, normal diffusion and anomalous diffusion is realized theoretically and numerically in the force free potential. Besides, external potential
Liu, Jian, Yang, B., Chen, X., Bao, J.
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Discrete versus continuous-time random walks

Journal of Statistical Physics, 1988
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Maes, Dominique, Van Den Broeck, Christian   +1 more
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Continuous time random walks on networks

Physical Review E
We study continuous time random walks on a network. We find that the steady state of the random walk on a given node is independent of the nature of the distribution of waiting times ψ(τ) and depends only on the local neighborhood of the node. The relaxation toward the steady state is, however, dependent on ψ(τ).
Sarvesh K. Upadhyay, R. K. Singh
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Continuous Time Random Walk

2021
The classical diffusion equation is widely used to describe transport phenomena observed in nature, where u denotes the concentration of a substance, \(\kappa \) is the diffusion coefficient, and (1.1) describes how the concentration evolves over time.
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Multienergetic continuous time random walk

Zeitschrift f�r Physik B Condensed Matter, 1984
We have extended the CTRW theory of Montroll and Weiss including the effect of extra variables, like the energy. This MCTRW scheme can be written in a simple matrix notation, that simplifies its solution. As an example of their usefulness we have studied a two-energy-group neutron diffusion problem.
Manuel O. C�ceres, Horacio S. Wio
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Continuous-time random walks on random media

Journal of Physics A: Mathematical and General, 1993
A continuous-time random-walk method is introduced for applications to transport processes in random media. The method is efficient and is easily parallelizable. It can be used to calculate the diffusivity of homogeneous mixtures of many components, with applications to effective permeability and conductivity measurements.
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Continuous-Time Random Walks

1995
Abstract In Chapter 4, we obtained the governing equations of continuous-time random processes by taking a suitable joint limit Δ -→0 and τ -→0 of a lattice random walk, where Δ is the lattice spacing and τ the constant time between successive steps.
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A dumbbell's random walk in continuous time

Journal of Physics A: Mathematical and General, 1994
We study the continuous-time dynamics of a rigid dumbbell or, equivalently, of two random walkers coupled through a holonomic constraint. Random walkers under holonomic constraints provide a generic model for many physical systems, e.g. for polymers.
Alemany, P. A., Vogel, R., Sokolov, I. M., Blumen, A.   +3 more
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On Linnik's continuous-time random walks

Journal of Physics A: Mathematical and General, 2000
Summary: In many fields of applied physics, the phenomenology of the space-time phenomena to be understood (in general for prediction purposes) may be described in the following most simple way: events with random common positive amplitude occur randomly in time according to a continuous time random walk (CTRW) model; the prerequisite is therefore a ...
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Continuous Time Random Walks

2021
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