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• W4328135948 abstract "In this paper, we firstly extend the physics-informed neural networks (PINNs) to learn data-driven stationary and non-stationary solitons of 1D and 2D saturable nonlinear Schrödinger equations (SNLSEs) with two fundamental PT-symmetric Scarf-II and periodic potentials in optical fibers. Secondly, the data-driven inverse problems are studied for PT-symmetric potential functions discovery rather than just potential parameters in the 1D and 2D SNLSEs. Particularly, we propose a modified PINNs (mPINNs) scheme to identify directly the PT potential functions of the 1D and 2D SNLSEs by the solution data. And the inverse problems about 1D and 2D PT-symmetric potentials depending on propagation distance z are also investigated using mPINNs method. We also identify the potential functions by the PINNs applied to the stationary equation of the SNLSE. Furthermore, two network structures are compared under different parameter conditions such that the predicted PT potentials can achieve the similar high accuracy. These results illustrate that the established deep neural networks can be successfully used in 1D and 2D SNLSEs with high accuracies. Moreover, some main factors affecting neural networks performance are discussed in 1D and 2D PT Scarf-II and periodic potentials, including activation functions, structures of the networks, and sizes of the training data. In particular, twelve different nonlinear activation functions are in detail analyzed containing the periodic and non-periodic functions such that it is concluded that selecting activation functions according to the form of solution and equation usually can achieve better effect." @default.
• W4328135948 created "2023-03-22" @default.
• W4328135948 creator A5072375928 @default.
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• W4328135948 date "2023-06-01" @default.
• W4328135948 modified "2023-10-17" @default.
• W4328135948 title "Deep learning soliton dynamics and complex potentials recognition for 1D and 2D <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline id=d1e11756 altimg=si77.svg><mml:mi mathvariant=script>PT</mml:mi></mml:math>-symmetric saturable nonlinear Schrödinger equations" @default.
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• W4328135948 doi "https://doi.org/10.1016/j.physd.2023.133729" @default.
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