Results 21 to 30 of about 1,779 (56)

Pure multiplicative stochastic resonance of anti-tumor model with seasonal modulability

open access: yes, 2006
The effects of pure multiplicative noise on stochastic resonance in an anti-tumor system modulated by a seasonal external field are investigated by using theoretical analyses of the generalized potential and numerical simulations.
B. Q. Ai   +7 more
core   +1 more source

Hypersensitive transport in a phase model with multiplicative stimulus

open access: yes, 2001
In a simple system with periodic symmetric potential, the phase model under effect of strong multiplicative noise or periodic square wave, we found a giant response, in the form of directed flux, to an ultrasmall dc signal.
Astumian   +20 more
core   +1 more source

Construction of the factorized steady state distribution in models of mass transport

open access: yes, 2004
For a class of one-dimensional mass transport models we present a simple and direct test on the chipping functions, which define the probabilities for mass to be transferred to neighbouring sites, to determine whether the stationary distribution is ...
Coppersmith S N   +8 more
core   +1 more source

Experimental evidence of stochastic resonance without tuning due to non Gaussian noises

open access: yes, 2001
In order to test theoretical predictions, we have studied the phenomenon of stochastic resonance in an electronic experimental system driven by white non Gaussian noise.
A. R. Plastino   +36 more
core   +1 more source

Transport Coherence in Frictional Ratchets [PDF]

open access: yes, 2003
We study the phenomena of noise induced transport in frictional ratchet systems. For this we consider a Brownian particle moving in a space dependent frictional medium in the presence of external white noise fluctuations.
Dan, Debasis   +2 more
core   +1 more source

Dynamical Correlations among Vicious Random Walkers

open access: yes, 2002
Nonintersecting motion of Brownian particles in one dimension is studied. The system is constructed as the diffusion scaling limit of Fisher's vicious random walk.
Altland   +32 more
core   +1 more source

Numerical estimate of the Kardar Parisi Zhang universality class in (2 + 1) dimensions

open access: yes, 2015
We study the Restricted Solid on Solid model for surface growth in spatial dimension $d=2$ by means of a multi-surface coding technique that allows to produce a large number of samples of samples in the stationary regime in a reasonable computational ...
Pagnani, Andrea, Parisi, Giorgio
core   +1 more source

Analytic study of clustering in shaken granular material using zero-range processes

open access: yes, 2004
We show that models used to described granular clustering due to vertical shaking belong to the class of zero-range processes. This correspondence allows us to derive exactly in a very easy and straightforward manner a number of properties of the models ...
Coppex   +13 more
core   +1 more source

On the occurrence of oscillatory modulations in the power-law behavior of dynamic and kinetic processes in fractals

open access: yes, 2007
The dynamic and kinetic behavior of processes occurring in fractals with spatial discrete scale invariance (DSI) is considered. Spatial DSI implies the existence of a fundamental scaling ratio (b_1). We address time-dependent physical processes, which as
Ben Avraham D.   +9 more
core   +1 more source

Waiting-times and returns in high-frequency financial data: an empirical study

open access: yes, 2002
In financial markets, not only prices and returns can be considered as random variables, but also the waiting time between two transactions varies randomly.
Berry   +14 more
core   +2 more sources

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