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arXiv · 1809.11154

Stability of matter-wave solitons in a density-dependent gauge theory

R. J. Dingwall·P. Öhberg
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Abstract

We consider the linear stability of chiral matter-wave solitons described by a density-dependent gauge theory. By studying the associated Bogoliubov-de Gennes equations both numerically and analytically, we find that the stability problem effectively reduces to that of the standard Gross-Pitaevskii equation, proving that the solitons are stable to linear perturbations. In addition, we formulate the stability problem in the framework of the Vakhitov-Kolokolov criterion and provide supplementary numerical simulations which illustrate the absence of instabilities when the soliton is initially perturbed.

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R. J. Dingwall, P. Öhberg. 2018-09-28. Stability of matter-wave solitons in a density-dependent gauge theory. https://doi.org/10.1103/physreva.99.023609

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