Stability of matter-wave solitons in a density-dependent gauge theory
arXiv:1809.11154 · doi:10.1103/PhysRevA.99.023609
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.
arXiv comment12 pages, 4 figures. Comments are welcome
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