This article is cited in 5 papers

MODELS IN PHYSICS AND TECHNOLOGY

Collective influence of impurities on the dynamics of kinks of modified sine-Gordon equation

E. G. Ekomasov, A. M. Gumerov

Bashkir State University, 32 Z.Validi str., Ufa, 450074, Russia

Abstract: We investigated numerically the dynamics of kinks of modified sine-Gordon equation in the model with localized spatial modulation of a periodic potential (or impurity). We considered the case of two identical impurities. We showed the possibility of collective effects of the influence of impurities, which are heavily dependent on the distance between them. We demonstrated the existence of a certain critical value of the distance between impurities, which has two qualitatively different scenarios of the dynamic behavior of kink.

Keywords: kink, breather, sine-Gordon equation, quasitunneling.

UDC: 517.957, 519.633

Received: 27.01.2013
Revised: 31.03.2013

DOI: 10.20537/2076-7633-2013-5-3-403-412