Results 11 to 20 of about 1,640 (96)

Ergodicity of the zigzag process [PDF]

, 2019
The zigzag process is a Piecewise Deterministic Markov Process which can be used in a MCMC framework to sample from a given target distribution. We prove the convergence of this process to its target under very weak assumptions, and establish a central ...
Bierkens, Joris, Roberts, Gareth, Zitt, Pierre-André   +2 more
core   +4 more sources

Moments and Lyapunov exponents for the parabolic Anderson model

, 2013
We study the parabolic Anderson model in $(1+1)$ dimensions with nearest neighbor jumps and space-time white noise (discrete space/continuous time). We prove a contour integral formula for the second moment and compute the second moment Lyapunov exponent.
Borodin, Alexei, Corwin, Ivan
core   +1 more source

Topological chaos, braiding and bifurcation of almost-cyclic sets [PDF]

, 2012
In certain two-dimensional time-dependent flows, the braiding of periodic orbits provides a way to analyze chaos in the system through application of the Thurston-Nielsen classification theorem (TNCT).
Grover, Piyush, Kumar, Pankaj, Ross, Shane D., Stremler, Mark A.   +3 more
core   +1 more source

Non-hermitean delocalization in an array of wells with variable-range widths

, 2000
Nonhermitean hamiltonians of convection-diffusion type occur in the description of vortex motion in the presence of a tilted magnetic field as well as in models of driven population dynamics. We study such hamiltonians in the case of rectangular barriers
B. Souillard, B.I. Halperin, D.R. Nelson, E. Brezin, I.M. Lifshits, I.Y. Goldsheid, J. Feinberg, J. Miller, J.D. Murray, M.M. Benderskii, N. Hatano, N. Hatano, N. Hatano, P.G. Silvestrov, P.W. Brouwer, V. G. Benza   +15 more
core   +1 more source

Singular integral operators. The case of an unlimited contour

Journal of Numerical Analysis and Approximation Theory, 2005
Let \(\Gamma\)be a closed or unclosed unlimited contour, a shift \(\alpha(t)\) maps homeomorphicly the contour \(\Gamma\) onto itself with preserving or reversing the direction on \(\Gamma\) and also satisfies the conditions: for some natural \(n\geq2\),
V. Neaga
doaj   +2 more sources

Computing the diffusion coefficient for intermittent maps: Resummation of stability ordered cycle expansions

, 1997
We compute the diffusion coefficient and the Lyapunov exponent for a diffusive intermittent map by means of cycle expansion of dynamical zeta functions.
Dahlqvist, Per, Dettmann, Carl P.
core   +1 more source

The projection dynamic, the replicator dynamic and the geometry of population games [PDF]

, 2007
Every population game defines a vector field on the set of strategy distributions X. The projection dynamic maps each population game to a new vector field: namely, the one closest to the payoff vector field among those that never point outward from X.
Dokumaci, E., Lahkar, R., Sandholm, W.H.
core  

Spectral Characterization of Anomalous Diffusion of a Periodic Piecewise Linear Intermittent Map

, 2003
For a piecewise linear version of the periodic map with anomalous diffusion, the evolution of statistical averages of a class of observables with respect to piecewise constant initial densities is investigated and generalized eigenfunctions of the ...
Artuso, Artuso, Bouchaud, Dräger, Gaspard, Gaspard, Geisel, Geisel, Gilbert, Gilbert, Lindblad, Manneville, Metzler, Miyaguchi, P Gaspard, Pollicott, Pollicott, Pomeau, Ruelle, Ruelle, Ruelle, Ruelle, Ruelle, S Tasaki, Seshadri, Shlesinger, Tasaki, Tasaki, Wang, Wang, Wang, Zumofen   +31 more
core   +1 more source

Optimal excitation of two dimensional Holmboe instabilities

, 2011
Highly stratified shear layers are rendered unstable even at high stratifications by Holmboe instabilities when the density stratification is concentrated in a small region of the shear layer.
Constantinou, Navid C., Ioannou, Petros J.   +1 more
core   +1 more source

A Phase Field Model for Continuous Clustering on Vector Fields [PDF]

, 2001
A new method for the simplification of flow fields is presented. It is based on continuous clustering. A well-known physical clustering model, the Cahn Hilliard model, which describes phase separation, is modified to reflect the properties of the data to
Garcke, Harald,, Preußer, Tobias,, Rumpf, Martin,, Telea, Alexandru C.,, Weikard, Ulrich,, Wijk, Jarke J. van,   +5 more
core   +2 more sources