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

R. J. Dingwall, Patrik Öhberg

Research output: Contribution to journalArticle

1 Citation (Scopus)
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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. These results justify the production of chiral solitons in ultracold experiments and their potential application for practical transport dynamics in interferometry and atomtronics.

Original languageEnglish
Article number023609
JournalPhysical Review A
Volume99
Issue number2
DOIs
Publication statusPublished - 7 Feb 2019

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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