A new kind of chaotic diffusion: Anti-persistent random walks of explosive dissipative solitons

Tony Albers, Jaime Cisternas, Günter Radons

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The solitons that exist in nonlinear dissipative media have properties very different from the ones that exist in conservative media and are modeled by the nonlinear Schrödinger equation. One of the surprising behaviors of dissipative solitons is the occurrence of explosions: sudden transient enlargements of a soliton, which as a result induce spatial shifts. In this work using the complex Ginzburg-Landau equation in one dimension, we address the long-time statistics of these apparently random shifts. We show that the motion of a soliton can be described as an anti-persistent random walk with a corresponding oscillatory decay of the velocity correlation function. We derive two simple statistical models, one in discrete and one in continuous time, which explain the observed behavior. Our statistical analysis benchmarks a future microscopic theory of the origin of this new kind of chaotic diffusion.

Original languageEnglish
Article number103034
JournalNew Journal of Physics
Volume21
Issue number10
DOIs
StatePublished - 15 Oct 2019

Bibliographical note

Publisher Copyright:
© 2019 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft.

Keywords

  • anti-persistent random walk
  • diffusion
  • dissipative solitons
  • distribution of generalized diffusivities
  • ergodicity breaking
  • explosions

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