Results 1 to 10 of about 2,957 (75)

Some free boundary problems involving non-local diffusion and aggregation. [PDF]

open access: yesPhilos Trans A Math Phys Eng Sci, 2015
We report on recent progress in the study of evolution processes involving degenerate parabolic equations what may exhibit free boundaries. The equations we have selected follow to recent trends in diffusion theory: considering anomalous diffusion with ...
Carrillo JA, Vázquez JL.
europepmc   +3 more sources

Cycling chaos: its creation, persistence and loss of stability in a model of nonlinear magnetoconvection [PDF]

open access: yes, 1998
We examine a model system where attractors may consist of a heteroclinic cycle between chaotic sets; this ‘cycling chaos’ manifests itself as trajectories that spend increasingly long periods lingering near chaotic invariant sets interspersed with short ...
A.M. Rucklidge   +23 more
core   +3 more sources

Renormalisation of parabolic stochastic PDEs [PDF]

open access: yes, 2018
We give a survey of recent result regarding scaling limits of systems from statistical mechanics, as well as the universality of the behaviour of such systems in so-called cross-over regimes.
Hairer, Martin
core   +2 more sources

Statistical Properties of Turbulence: An Overview [PDF]

open access: yes, 2009
We present an introductory overview of several challenging problems in the statistical characterisation of turbulence. We provide examples from fluid turbulence in three and two dimensions, from the turbulent advection of passive scalars, turbulence in ...
A. Aharony   +141 more
core   +4 more sources

Stochastic PDEs, Regularity Structures, and Interacting Particle Systems [PDF]

open access: yes, 2017
These lecture notes grew out of a series of lectures given by the second named author in short courses in Toulouse, Matsumoto, and Darmstadt. The main aim is to explain some aspects of the theory of "Regularity structures" developed recently by Hairer in
Chandra, Ajay, Weber, Hendrik
core   +4 more sources

Roughening of the (1+1) interfaces in two-component surface growth with an admixture of random deposition

open access: yes, 2004
We simulate competitive two-component growth on a one dimensional substrate of $L$ sites. One component is a Poisson-type deposition that generates Kardar-Parisi-Zhang (KPZ) correlations. The other is random deposition (RD).
A. Kolakowska   +19 more
core   +1 more source

Max-Min characterization of the mountain pass energy level for a class of variational problems

open access: yes, 2009
We provide a max-min characterization of the mountain pass energy level for a family of variational problems. As a consequence we deduce the mountain pass structure of solutions to suitable PDEs, whose existence follows from classical minimization ...
Bellazzini, Jacopo, Visciglia, Nicola
core   +1 more source

Type II critical phenomena of neutron star collapse

open access: yes, 2007
We investigate spherically-symmetric, general relativistic systems of collapsing perfect fluid distributions. We consider neutron star models that are driven to collapse by the addition of an initially "in-going" velocity profile to the nominally static ...
C. Gundlach   +12 more
core   +1 more source

Reduced-order Description of Transient Instabilities and Computation of Finite-Time Lyapunov Exponents

open access: yes, 2017
High-dimensional chaotic dynamical systems can exhibit strongly transient features. These are often associated with instabilities that have finite-time duration.
Arnold V. I.   +4 more
core   +1 more source

Synchronization Landscapes in Small-World-Connected Computer Networks

open access: yes, 2006
Motivated by a synchronization problem in distributed computing we studied a simple growth model on regular and small-world networks, embedded in one and two-dimensions.
A. G. Greenberg   +27 more
core   +1 more source

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