A New class of integrable defects

Ed Corrigan, Cristina Zambon

Research output: Contribution to journalArticlepeer-review


An alternative Lagrangian definition of an integrable defect is provided and analysed. The new approach is sufficiently broad to allow a description of defects within the Tzitzéica model, which was not possible in previous approaches, and may be generalizable. New, two-parameter, sine-Gordon defects are also described, which have characteristics resembling a pair of 'fused' defects of a previously considered type. The relationship between these defects and Bäcklund transformations is described and a Hamiltonian description of integrable defects is proposed.
Original languageEnglish
Article number475203
Pages (from-to)1-20
Number of pages20
JournalJournal of Physics A: Mathematical and Theoretical
Issue number47
Publication statusPublished - 27 Nov 2009


  • mathematical physics;
  • statistical physics;
  • nonlinear systems;

Cite this