Stability criterion for multicomponent solitary waves

  title={Stability criterion for multicomponent solitary waves},
  author={Pelinovsky and Kivshar},
  journal={Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics},
  volume={62 6 Pt B},
  • Pelinovsky, Kivshar
  • Published 2000 in
    Physical review. E, Statistical physics, plasmas…
We obtain the most general matrix criterion for stability and instability of multicomponent solitary waves by considering a system of N incoherently coupled nonlinear Schrodinger equations. Soliton stability is studied as a constrained variational problem which is reduced to finite-dimensional linear algebra. We prove that unstable (all real and positive) eigenvalues of the linear stability problem for multicomponent solitary waves are connected with negative eigenvalues of the Hessian matrix… CONTINUE READING