Suppression of two-bounce windows in kink-antikink collisions

• Type: Article in International Scientific Journal
• Date: 2016

Authors

F. C. Simas (Author) Other; Adalto R. Gomes (Author) Other; K. Z. Nobrega (Author) Other; J.C.R.E. Oliveira (Author) FEUP

Journal

Title: Journal of High Energy Physics

Vol. 2016

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 14 Citations

Scopus - 24 Citations

Other information

Authenticus ID: P-00K-XKT

DOI: 10.1007/jhep09(2016)104

Abstract (EN): We consider a class of topological defects in (1,1)-dimensions with a deformed phi(4) kink structure whose stability analysis leads to a Schrodinger-like equation with a zero-mode and at least one vibrational (shape) mode. We are interested in the dynamics of kink-antikink collisions, focusing on the structure of two-bounce windows. For small deformation and for one or two vibrational modes, the observed two-bounce windows are explained by the standard mechanism of a resonant effect between the first vibrational and the translational modes. With the increasing of the deformation, the effect of the appearance of more than one vibrational mode is the gradual disappearance of the initial two-bounce windows. The total suppression of two-bounce windows even with the presence of a vibrational mode offers a counterexample from what expected from the standard mechanism. For extremely large deformation the defect has a 2-kink structure with one translational and one vibrational mode, and the standard structure of two-bounce windows is recovered.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13