Stable flat-top solitons and peakons in the PT-symmetric δ-signum potentials and nonlinear media.
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DOI: 10.1063/1.5100294
Abstract: We discover that the physically interesting PT-symmetric Dirac delta-function potentials can not only make sure that the non-Hermitian Hamiltonians admit fully-real linear spectra but also support stable peakons (nonlinear modes) in the Kerr nonlinear Schrödinger… read more here.
Keywords: flat top; symmetric signum; stable flat; top solitons ... See more keywords