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Paper detail

Backlund transformation and L2-stability of NLS solitons

Ground states of a L2-subcritical focusing nonlinear Schrodinger (NLS) equation are known to be orbitally stable in the energy class H1 thanks to its variational characterization. In this paper, we will show L2-orbital stability of 1-solitons to a one-dimensional cubic NLS equation for any initial data which are close to 1-solitons in L2. Moreover, we prove that if the initial data are in H3 in addition to being small in L2, then the solution remains in an L2-neighborhood of a specific 1-soliton solution for all the time. The proof relies on the Backlund transformation between zero and soliton solutions of this integrable equation.

preprint2010arXivOpen access
Tetsu MizumachiDmitry Pelinovsky
nlin.PSnlin.SI
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Tetsu MizumachiDmitry Pelinovsky

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