Eigenvalue cut-off in the cubic-quintic nonlinear Schrodinger equation

Details Eigenvalue cut-off in the cubic-quintic nonlinear Schrodinger equation Eigenvalue cut-off in the cubic-quintic nonlinear Schrodinger equation

2008-07-03

arxiv.org/abs/0807.0510v1

Nonlinear Sciences

Pattern Formation and Solitons

4 pages

Scientific paper

Using theoretical arguments, we prove the numerically well-known fact that the eigenvalues of all localized stationary solutions of the cubic-quintic 2D+1 nonlinear Schrodinger equation exhibit an upper cut-off value. The existence of the cut-off is inferred using Gagliardo-Nirenberg and Holder inequalities together with Pohozaev identities. We also show that, in the limit of eigenvalues close to zero, the eigenstates of the cubic-quintic nonlinear Schrodinger equation behave similarly to those of the cubic nonlinear Schrodinger equation.

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