Abstract
The existence of two-kink soliton solutions in polynomial potentials was first reported by Bazeia in a special type of scalar field systems. A general feature of these potentials is that they possess two minima and a local metastable minimum between them. In the present work we investigate the appearance of this special kind of soliton in the sine-Gordon model under the perturbation of a space-dependent force. We show that a pair of solitons is emitted during the process of kink breakup by internal mode instabilities. A possible explanation of these phenomena is an interplay between the solitons repelling interaction and the external force, resulting in a separation or a packing of several kinks.
Original language | English |
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Article number | 066602 |
Journal | Physical Review E |
Volume | 86 |
Issue number | 6 |
DOIs | |
State | Published - 14 Dec 2012 |
Externally published | Yes |