Physics Letters B (Jan 2023)

Moduli space with a boundary

  • C. Adam,
  • K. Oles,
  • T. Romanczukiewicz,
  • A. Wereszczynski

Journal volume & issue
Vol. 836
p. 137611

Abstract

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We find that for various solitonic processes the corresponding canonical moduli space can have a boundary which is accessible in a finite time evolution. We show that such a boundary is not a failure of the moduli space approach but has a physical meaning. In our example, it corresponds to the complete annihilation of a colliding kink and antikink after a finite time. We further find that, close to the boundary, the solutions have an approximate self-similar form.