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Is there an accelerating nonspreading wave packet in the Schrödinger equation with higher even-order dispersions?
Published 22 Sep 2026 in nlin.PS and physics.optics | (2609.25799v1)
Abstract: Probably not. For Airy-type initial data, although nearly all lobes accelerate, the principal lobe remains essentially stationary. Moreover, the overall wave packet gradually disperses.
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