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- W2929019137 abstract "In this paper, we study the ground and first excited states of the fractional Bose–Einstein condensates (BEC) which is modeled by fractional Gross–Pitaevskii (GP) equation. We first introduce the normalized gradient flow method and prove its energy diminishing property. Then the weighted shifted Grünwald–Letnikov difference (WSGD) method is used to discretize the Gross–Pitaevskii equation. The corresponding normalization and energy diminishing property for the semi-discrete scheme are proved. For the time discretization, we use the implicit integration factor (IIF) method which decouples the diffusion and nonlinear terms separately. Finally the numerical methods are applied to compute the ground and first excited states of fractional BEC with harmonic oscillator, harmonic-plus-optical lattice and box potential. Our numerical results show that the ground and excited states in fractional GP equation differ from those of the standard (non-fractional) GP equation." @default.
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- W2929019137 date "2019-09-01" @default.
- W2929019137 modified "2023-09-23" @default.
- W2929019137 title "The numerical study for the ground and excited states of fractional Bose–Einstein condensates" @default.
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- W2929019137 doi "https://doi.org/10.1016/j.camwa.2019.03.041" @default.
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