Journal article · Preprint article
Effects of finite curvature on soliton dynamics in a chain of non-linear oscillators
We consider a curved chain of non-linear oscillators and show that the interplay of curvature and non-linearity leads to a number of qualitative effects. In particular, the energy of non-linear localized excitations centred on the bending decreases when curvature increases, i.e. bending manifests itself as a trap for excitations.
Moreover, the potential of this trap is a double-well one, thus leading to a symmetry-breaking phenomenon: a symmetric stationary state may become unstable and transform into an energetically favourable asymmetric stationary state. The essentials of symmetry breaking are examined analytically for a simplified model.
We also demonstrate a threshold character of the scattering process, i.e. transmission, trapping, or reflection of the moving non-linear excitation passing through the bending.
Language: | English |
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Publisher: | IOP Publishing |
Year: | 2001 |
Pages: | 1181-1192 |
ISSN: | 1361648x and 09538984 |
Types: | Journal article and Preprint article |
DOI: | 10.1088/0953-8984/13/6/301 |
ORCIDs: | Christiansen, Peter Leth |