On symmetric breather collisions
in lattices with saturable nonlinearity |
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| Authors: | A Maluckov Lj Hadžievski M Stepić |
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| Institution: | (1) Faculty of Sciences and Mathematics, University of Niš, P.O. Box 224, 18001 Niš, Serbia;(2) Vinča Institute of Nuclear Sciences, P.O. Box 522, 11001 Belgrade, Serbia;(3) Institute of Physics and Physical Technologies, Clausthal University of Technology, 38678 Clausthal-Zellerfeld, Germany |
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| Abstract: | Symmetric collisions of two discrete breathers in the
lattice with saturable nonlinearity are investigated. The strong
correlation of the collision properties and the parameters of
colliding breathers (power, velocity, and phase difference),
lattice parameters and position of the collision point is found.
This is related to the internal structure of the colliding
breathers and energy exchange with the phonon background. The type
of collision changes from elastic to the inelastic (the breathers
merging, multi-bounce interactions, breather creation etc.) with
the increasing of the colliding breather power. Collision of high
power breathers always results in the breather fusion. The elastic
and inelastic collisions are related to the periodic and
quasi-periodic colliding breathers, respectively. |
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| Keywords: | 42 65 Tg Optical solitons nonlinear guided waves 63 20 Pw Localized modes |
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