When can one observe good hydrodynamic lyapunov modes?

Research output: Contribution to journalResearch articleContributedpeer-review


  • Hong Liu Yang - , Chemnitz University of Technology (Author)
  • Günter Radons - , Chemnitz University of Technology (Author)


Inspired by recent results on differences in fluctuations of finite-time Lyapunov exponents between hard-core and soft-potential systems we surmise that partial domination of the Oseledec splitting (DOS) with respect to subspaces associated with near-zero Lyapunov exponents is essential for observing good hydrodynamic Lyapunov modes (HLMs). Numerical results for coupled map lattices are presented to show the importance of DOS for observing good HLMs. This is achieved by relating splitting parameters to the maximum value of the Lyapunov mode structure factor.


Original languageEnglish
Article number024101
JournalPhysical review letters
Issue number2
Publication statusPublished - 14 Jan 2008
Externally publishedYes


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