Wave motions along lattices with nonlinear on-site and inter-site potentials. Cooperation and/or competition leading to lattice solitons and/or discrete breathers

Manuel G. Velarde ； Alexander P. Chetverikov ； Werner Ebeling ； Sergey V. Dmitriev ； Victor D. Lakhno

《Proceedings of the Estonian Academy of Sciences》 64卷3S期 (2015/09) Pp. 396-404

https://doi.org/10.3176/proc.2015.3S.10

並列摘要

We consider the wave dynamics of a one-dimensional lattice where both on-site and inter-site vibrations, coupled together, are governed by Morse interactions. We focus attention on the onset of lattice solitons and discrete breathers (DBs, aka intrinsic localized modes, ILM). We show how varying the relative strength of the on-site potential to that of the inter-site potential permits transition from one mode of (travelling or otherwise) localized excitation to the other.

並列關鍵字

lattice soliton ； discrete breather ； intrinsic localized mode ； Morse potential ； on-site potential ； inter-site potential