Adaptation and assessement of Projected Nesterov accelerated gradient flow to compute stationary states of nonlinear Schrödinger equations
Résumé
The aim of the paper is to derive minimization algorithms based on the Nesterov accelerated gradient flow [23, 24, 25] to compute the ground state of nonlinear Schrödinger equations, which can potentially include a fractional laplacian term. A comparison is developed with standard gradient flow formulations showing that the Nesterov accelerated gradient flow has some interesting properties but at the same time finds also some limitations due to the nature of the problem. A few simulations are finally reported to understand the behavior of the algorithms and open the path to further complicate questions that require more advanced studies concerning the application of the Nesterov accelerated gradient flow to nonlinear Schrödinger equations.
Mots clés
Bose-Einstein condensation nonlinear space fractional Schrödinger equation stationary states gradient flow Nesterov accelerated gradient flow pseudo-spectral method Contents
Bose-Einstein condensation
nonlinear space fractional Schrödinger equation
stationary states
gradient flow
Nesterov accelerated gradient flow
pseudo-spectral method Contents
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