Results 41 to 50 of about 2,634 (112)

Comment on "Mean First Passage Time for Anomalous Diffusion"

open access: yes, 2004
We correct a previously erroneous calculation [Phys. Rev. E 62, 6065 (2000)] of the mean first passage time of a subdiffusive process to reach either end of a finite interval in one dimension.
A.V. Chechkin   +14 more
core   +1 more source

Diffusion of interacting particles in discrete geometries

open access: yes, 2013
We evaluate the self-diffusion and transport diffusion of interacting particles in a discrete geometry consisting of a linear chain of cavities, with interactions within a cavity described by a free-energy function.
Becker, T.   +4 more
core   +1 more source

Linear Amplifier Breakdown and Concentration Properties of a Gaussian Field Given that its $\bm{L^2}$-Norm is Large

open access: yes, 2011
In the context of linear amplification for systems driven by the square of a Gaussian noise, we investigate the realizations of a Gaussian field in the limit where its $L^2$-norm is large.
C.-H. Chang   +10 more
core   +1 more source

Accuracy and range of validity of the Wigner surmise for mixed symmetry classes in random matrix theory

open access: yes, 2012
Schierenberg et al. [Phys. Rev. E 85, 061130 (2012)] recently applied the Wigner surmise, i.e., substitution of \infty \times \infty matrices by their 2 \times 2 counterparts for the computation of level spacing distributions, to random matrix ensembles ...
M. L. Mehta   +2 more
core   +1 more source

Randomly Amplified Discrete Langevin Systems

open access: yes, 1999
A discrete stochastic process involving random amplification with additive noise is studied analytically. If the non-negative random amplification factor $b$ is such that $=1$ where $\beta$ is any positive non-integer, then the steady state probability ...
Fuchikami, Nobuko
core   +1 more source

Herd Behaviors in Financial Markets

open access: yes, 2004
We investigate the herd behavior of returns for the yen-dollar exchange rate in the Japanese financial market. It is obtained that the probability distribution $P(R)$ of returns $R$ satisfies the power-law behavior $P(R) \simeq R^{-\beta}$ with the ...
Choi, J. S.   +3 more
core   +1 more source

What is the value of an observable between pre- and postselection?

open access: yes, 2003
Hall's recent derivation of an exact uncertainty relation [Phys. Rev. A64, 052103 (2001)] is revisited. It is found that the Bayes estimator of an observable between pre- and postselection equals the real part of the weak value.
Aharonov   +17 more
core   +2 more sources

Correlation in the velocity of a Brownian particle induced by frictional anisotropy and magnetic field

open access: yes, 2007
We study the motion of charged Brownian particles in an external magnetic field. It is found that a correlation appears between the components of particle velocity in the case of anisotropic friction, approaching asymptotically zero in the stationary ...
Barreiro   +18 more
core   +1 more source

Modeling Spacing Distribution of Queuing Vehicles in Front of a Signalized Junction Using Random-Matrix Theory

open access: yes, 2008
Modeling of headway/spacing between two consecutive vehicles has many applications in traffic flow theory and transport practice. Most known approaches only study the vehicles running on freeways.
Li Li   +4 more
core   +1 more source

Comment on "Generalized exclusion processes: Transport coefficients"

open access: yes, 2016
In a recent paper Arita et al. [Phys. Rev. E 90, 052108 (2014)] consider the transport properties of a class of generalized exclusion processes. Analytical expressions for the transport-diffusion coefficient are derived by ignoring correlations.
Becker, T.   +4 more
core   +1 more source

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