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Gap Solitons in Anharmonic Diatomic lattice
Journal: International Journal of Science and Research (IJSR) (Vol.5, No. 6)Publication Date: 2016-06-05
Authors : Nand Kishore Pandey; Gautam Johri; Anil Kumar Ram;
Page : 1193-1196
Keywords : Double Sine Gordon Equations; Critical Points; Gap Solitons; Coupled Wave Method; Saddle Points;
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Abstract
we consider a one - dimensional nonlinear diatomic lattice with two different masses (M & gt, m). We find the exact soliton solutions in the forbidden frequency range ( band gap) between the longitudinal acoustic and optical phonon branches by coupled wave method
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