Chaotic and homoclinic behavior for numerical discretizations of the nonlinear Schrödinger equation

David W. McLaughlin, Constance M. Schober

Research output: Contribution to journalArticle


Certain conservative discretizations of the NLS can produce irregular behavior. We consider the diagonal discretization as a conservative perturbation of the integrable discretization and study the homoclinic crossings in its nonlinear spectrum. We find that irregularity sets in when two homoclinic structures are present and, in this case, many and continual homoclinic crossings occur throughout the irregular time series. We indicate a Melnikov analysis to study the consequences of this homoclinic behavior.

Original languageEnglish (US)
Pages (from-to)447-465
Number of pages19
JournalPhysica D: Nonlinear Phenomena
Issue number3-4
StatePublished - Aug 15 1992


ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics
  • Condensed Matter Physics
  • Applied Mathematics

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