Polarobreathers in soft potentials
Soft Condensed Matter
2015-05-25 v1 Pattern Formation and Solitons
Abstract
We consider polarons in models of coupled electronic and vibrational degrees of freedom, in the presence of a soft nonlinear inter-particle potential (Morse potential). In particular, we focus on a a bound state of a polaron with a breather, a so-called ``polarobreather''. We analyze the existence of this branch based on frequency resonance conditions and illustrate its stability using Floquet spectrum techniques. Multi-site solutions of this type are also obtained both in the stationary case (two-site polarons) and in the breathing case (two-site polarobreathers). We also obtain a different branch of solutions, namely a polaronic nanopteron.
Keywords
Cite
@article{arxiv.cond-mat/0512695,
title = {Polarobreathers in soft potentials},
author = {J. Cuevas and P. G. Kevrekidis and D. J. Frantzeskakis and A. R. Bishop},
journal= {arXiv preprint arXiv:cond-mat/0512695},
year = {2015}
}
Comments
7 pages, 10 figures