arXiv (509.308 recursos) This is one of the most extensive subject based repositories in the world in the field of physics, mathematics, astronomy, computer sciences and quantitative biology. This is the principal site with almost 20 mirror versions around the globe. The site is supported by an extensive collection of information and background documentation. An RSS feed is available for anyone interested in keeping up-to-date with newly added materials.
Mostrando recursos 1 - 20 de 13.166
1. Quasi-linear Stokes phenomenon for the Painlev\'e first equation - Kapaev, Andrei A. Using the Riemann-Hilbert approach, the $\Psi$-function corresponding to thesolution of the first Painleve equation, $y_{xx}=6y^2+x$, with the asymptoticbehavior $y\sim\pm\sqrt{-x/6}$ as $|x|\to\infty$ is constructed.
2. Complex dynamics in a one--block model for earthquakes - Montagne, Raul; Vasconcelos, G. L. Depending on the elastic anisotropy and the friction forcethree generic regimes are possible: i) pure creep; ii) pure stick-slip motion;and iii) a mixed regime.
3. Vorticity cutoff in nonlinear photonic crystals - Ferrando, Albert; Zacares, Mario; Garcia-March, Miguel-Angel Using group theory arguments, we demonstrate that, unlike in homogeneousmedia, no symmetric vortices of arbitrary order can be generated intwo-dimensional (2D) nonlinear systems possessing a discrete-point symmetry.
4. Inhomogeneous Anisotropic Passive Scalars - Afonso, M. Martins; Sbragaglia, M. We investigate the behaviour of the two-point correlation function in thecontext of passive scalars for non homogeneous, non isotropic forcingensembles.
5. Models for optical solitons in the two-cycle regime - Leblond, Herve; Sanchez, Francois We derive model equations for optical pulse propagation in a medium describedby a two-level Hamiltonian, without the use of the slowly varying envelopeapproximation.
7. Soliton Dynamics in Computational Anatomy - Holm, Darryl D.; Ratnanather, J. Tilak; Trouvé, Alain; Younes, Laurent Amongthese geometric structures, landmarks and image outlines in CA are shown to besingular solutions of a partial differential equation that is called thegeodesic EPDiff equation.
9. Large-Scale Coherence and Law of Decay of Two-Dimensional Turbulence - Yakhot, Victor; Wanderer, John At the short times, the enstrophy $\Omega$ of a two-dimensional flow,generated by a random Gaussian initial condition decays as $\Omega(t)\proptot^{-\gamma}$ with $\gamma\approx 0.7$.
10. Chaos suppression in the parametrically driven Lorenz system - Choe, Chol-Ung; Benner, Hartmut; Kivshar, Yuri S. We predict theoretically and verify experimentally the suppression of chaosin the Lorenz system driven by a high-frequency periodic or stochasticparametric force.
11. Introduction to chaos and diffusion - Boffetta, G.; Lacorata, G.; Vulpiani, A. This contribution is relative to the opening lectures of the ISSAOS 2001summer school and it has the aim to provide the reader with some concepts andtechniques concerning chaotic dynamics and transport processes in fluids.
12. Stable Vortex Solitons in Nonlocal Self-Focusing Nonlinear Media - Yakimenko, Alexander; Zaliznyak, Yuri; Kivshar, Yuri We reveal that spatially localized vortex solitons become stable inself-focusing nonlinear media when the vortex symmetry-breaking azimuthalinstability is eliminated by a nonlocal nonlinear response.
13. Dynamics of a piecewise smooth map with singularity - Kumar, Aloke; Banerjee, Soumitro; Lathrop, Daniel P. Experiments observing the liquid surface in a vertically oscillatingcontainer have indicated that modeling the dynamics of such systems requiremaps that admit states at infinity.
14. Additive Noise Induces Front Propagation - Clerc, M. G.; Falcon, C.; Tirapegui, E. The propagation of a front connecting a stable homogeneous state with astable periodic state in the presence of additive noise is studied.
15. Weak noise approach to the logistic map - Fogedby, Hans C.; Jensen, Mogens H. Using a nonperturbative weak noise approach we investigate the interferenceof noise and chaos in simple 1D maps.
17. Collection of Master-Slave Synchronized Chaotic Systems - Lerescu, A. I.; Constandache, N.; Oancea, S.; Grosu, I. In this work the open-plus-closed-loop (OPCL) method of synchronization isused in order to synchronize the systems from the Sprott's collection of thesimplest chaotic systems.
1. 