Stability analysis of nonlinear localized modes in the coupled Gross-Pitaevskii equations with P T -symmetric Scarf-II potential

Jia-Rui Zhang and Xia Wang

PLOS ONE, 2023, vol. 18, issue 11, 1-13

Abstract: We study the nonlinear localized modes in two-component Bose-Einstein condensates with parity-time-symmetric Scarf-II potential, which can be described by the coupled Gross-Pitaevskii equations. Firstly, we investigate the linear stability of the nonlinear modes in the focusing and defocusing cases, and get the stable and unstable domains of nonlinear localized modes. Then we validate the results by evolving them with 5% perturbations as an initial condition. Finally, we get stable solitons by considering excitations of the soliton via adiabatical change of system parameters. These findings of nonlinear modes can be potentially applied to physical experiments of matter waves in Bose-Einstein condensates.

Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0294790

DOI: 10.1371/journal.pone.0294790

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