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Sasa-Satsuma equation: Soliton on a background and its limiting cases
2012, Bandelow, Uwe, Akhmediev, Nail
We present a multi-parameter family of a soliton on a background solutions to the Sasa-Satsuma equation. The solution is controlled by a set of several free parameters that control the background amplitude as well as the soliton itself. This family of solutions admits a few nontrivial limiting cases that are considered in detail. Among these special cases is the NLSE limit and the limit of rogue wave solutions
Persistence of rouge waves in extended nonlinear Schrödinger equations : integrable Sasa-Satsuma case
2012, Bandelow, Uwe, Akhmediev, Nail N.
We present the lowest order rogue wave solution of the Sasa-Satsuma equation (SSE) which is one of the integrable extensions of the nonlinear Schrödinger equation (NLSE). In contrast to the Peregrine solution of the NLSE, it is significantly more involved and contains polynomials of fourth order rather than second order in the corresponding expressions. The correct limiting case of Peregrine solution appears when the extension parameter of the SSE is reduced to zero.
Solitons on a background, rogue waves, and classical soliton solutions of Sasa-Satsuma equation
2013, Bandelow, Uwe, Akhmediev, Nail
We present the most general multi-parameter family of a soliton on a background solutions to the Sasa-Satsuma equation. The solution contains a set of several free parameters that control the background amplitude as well as the soliton itself. This family of solutions admits nontrivial limiting cases, such as rogue waves and classical solitons, that are considered in detail.