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DMLPG method for numerical simulation of soliton collisions in multi-dimensional coupled damped nonlinear Schrödinger system which arises from Bose–Einstein condensates

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  • Ilati, Mohammad
  • Dehghan, Mehdi

Abstract

In this paper, the direct meshless local Petrov–Galerkin (DMLPG) method is applied to find the numerical solution of coupled damped nonlinear Schrödinger system in one, two and three-dimensional spaces. The propagation properties of single soliton, double and triple solitons of coupled damped nonlinear Schrödinger system are simulated and the interactions between these solitons are studied numerically. The efficient time differencing Runge–Kutta method is utilized for the time discretization. DMLPG shifts the numerical integrations over low-degree polynomials rather than over complicated shape functions and this significantly increases the computational efficiency of DMLPG in comparison with the other meshless local weak form methods especially in two and three dimensions. The main aim of this paper is to show that the DMLPG method can be simply used for solving high-dimensional system of non-linear partial differential equations especially coupled damped nonlinear Schrödinger system. The numerical results confirm the good efficiency of the proposed method for solving our model.

Suggested Citation

  • Ilati, Mohammad & Dehghan, Mehdi, 2019. "DMLPG method for numerical simulation of soliton collisions in multi-dimensional coupled damped nonlinear Schrödinger system which arises from Bose–Einstein condensates," Applied Mathematics and Computation, Elsevier, vol. 346(C), pages 244-253.
    • Handle: RePEc:eee:apmaco:v:346:y:2019:i:c:p:244-253
    DOI: 10.1016/j.amc.2018.10.016
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    References listed on IDEAS

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    1. Ismail, M.S. & Taha, Thiab R., 2001. "Numerical simulation of coupled nonlinear Schrödinger equation," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 56(6), pages 547-562.
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    3. Ismail, M.S. & Taha, Thiab R., 2007. "A linearly implicit conservative scheme for the coupled nonlinear Schrödinger equation," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 74(4), pages 302-311.
    4. Wang, Tingchun & Jiang, Jiaping & Wang, Hanquan & Xu, Weiwei, 2018. "An efficient and conservative compact finite difference scheme for the coupled Gross–Pitaevskii equations describing spin-1 Bose–Einstein condensate," Applied Mathematics and Computation, Elsevier, vol. 323(C), pages 164-181.
    5. Ismail, M.S., 2008. "Numerical solution of coupled nonlinear Schrödinger equation by Galerkin method," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 78(4), pages 532-547.
    6. Zhou, Shenggao & Cheng, Xiaoliang, 2010. "Numerical solution to coupled nonlinear Schrödinger equations on unbounded domains," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 80(12), pages 2362-2373.
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