Discrete breathers above phonon spectrum

The structure of eigenmodes and phonon scattering by discrete breathers in the discrete nonlinear Schrödinger chain

We present a linear theory for one-dimensional phonon scattering by discrete breathers in the discrete nonlinear Schrödinger equation using the transfer matrix formulation. We focus on eigenmodes in the linearized equation, which plays an important role in the scattering problem. Considering a special class of boundary conditions for both physical and unphysical eigenmodes in the non-traveling ...

Discrete breathers in protein structures.

Recently, using a numerical surface cooling approach, we have shown that highly energetic discrete breathers (DBs) can form in the stiffest parts of nonlinear network models of large protein structures. In the present study, using an analytical approach, we extend our previous results to low-energy discrete breathers as well as to smaller proteins. We confirm and further scrutinize the striking...

Discrete breathers in carbon nanotubes

We study large-amplitude oscillations of carbon nanotubes with chiralities (m, 0) and (m,m) and predict the existence of spatially localized nonlinear modes in the form of discrete breathers. In nanotubes with the index (m, 0) we find three types of discrete breathers associate with longitudinal, radial, and torsion anharmonic vibrations, however only the twisting breathers are found to be nonr...

Discrete breathers in Josephson arrays.

Since the original proposal of 1996 by Floria et al. [Europhys. Lett. 36, 539 (1996)] of intrinsic localization in Josephson ladders, many efforts have been devoted to the theoretical, numerical, and experimental study of such dynamical states in Josephson arrays. Such efforts have already produced around 20 papers on the subject. In this article we will try to review the basic aspects of the p...

Discrete Breathers in Deformed Graphene