Artificial Neural Network Methods in Quantum Mechanics

Details Artificial Neural Network Methods in Quantum Mechanics Artificial Neural Network Methods in Quantum Mechanics

1997-05-15

arxiv.org/abs/quant-ph/9705029v1

Comput.Phys.Commun. 104 (1997) 1-14

Physics

Quantum Physics

Latex file, 29pages, 11 psfigs, submitted in CPC

Scientific paper

10.1016/S0010-4655(97)00054-4

In a previous article we have shown how one can employ Artificial Neural Networks (ANNs) in order to solve non-homogeneous ordinary and partial differential equations. In the present work we consider the solution of eigenvalue problems for differential and integrodifferential operators, using ANNs. We start by considering the Schr\"odinger equation for the Morse potential that has an analytically known solution, to test the accuracy of the method. We then proceed with the Schr\"odinger and the Dirac equations for a muonic atom, as well as with a non-local Schr\"odinger integrodifferential equation that models the $n+\alpha$ system in the framework of the resonating group method. In two dimensions we consider the well studied Henon-Heiles Hamiltonian and in three dimensions the model problem of three coupled anharmonic oscillators. The method in all of the treated cases proved to be highly accurate, robust and efficient. Hence it is a promising tool for tackling problems of higher complexity and dimensionality.

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