Superexponential amplification, power blowup, and solitons sustained by non-Hermitian gauge potentials

  title={Superexponential amplification, power blowup, and solitons sustained by non-Hermitian gauge potentials},
  author={Dmitry A. Zezyulin and Yaroslav V. Kartashov and Vladimir V. Konotop},
  journal={Physical Review A},
We introduce a continuous one-dimensional non-Hermitian matrix gauge potential and study its effect on dynamics of a two-component field. The model is emulated by a system of evanescently coupled nonlinear waveguides with distributed gain and losses. The considered gauge fields lead to a variety of unusual physical phenomena in both linear and nonlinear regimes. In the linear regime, the field may undergo superexponential convective amplification. A total power of an input Gaussian beam may… 

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