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

Proceedings of the Estonian Academy of Sciences

Werner Ebeling¹  Victor D. Lakhno¹  Manuel G. Velarde¹  Alexander P. Chetverikov¹  Sergey V. Dmitriev¹ 

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

DOI  :  10.3176/proc.2015.3S.10

学科分类：化学（综合）

来源: Teaduste Akadeemia Kirjastus

【 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.

【 授权许可】

Unknown