Head butting sheep: Kink collisions in the presence of false vacua

Jennifer Ashcroft, Minoru Eto, Mareike Haberichter, Muneto Nitta, M. B. Paranjape

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


We investigate numerically kink collisions in a 1 + 1 dimensional scalar field theory with multiple vacua. The domain wall model we are interested in involves two scalar fields and a potential term built from an asymmetric double well and (double) sine-Gordon potential together with an interaction term. Depending on the initial kink setup and impact velocities, the model allows for a wide range of scattering behaviours. Kinks can repel each other, annihilate, form true or false domain walls and reflect off each other.

Original languageEnglish
Article number365203
JournalJournal of Physics A: Mathematical and Theoretical
Issue number36
Publication statusPublished - 2016 Aug 17


  • domain walls
  • false vacuum
  • kink
  • kink collisions
  • kink interaction
  • numerical simulations
  • solitons

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Modelling and Simulation
  • Mathematical Physics
  • General Physics and Astronomy


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