Modulational instability: first step towards energy localization in nonlinear lattices
نویسندگان
چکیده
We study the modulational instability in discrete lattices and we show how the discreteness drastically modifies the stability condition. Analytical and numerical results are in very good agreement. We predict also the evolution of a linear wave in the presence of noise and we show that modulational instability is the first step towards energy localization. PACS numbers: 6310, 0340K, 4610, 0545
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