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Symplectic methods of fifth order for the numerical solution of the radial Schrödinger equation. (English) Zbl 1044.81031

Summary: In this paper the numerical solution of the radial Schrödinger equation via new proposed symplectic-schemes is investigated. In particular, the radial Schödinger equation is transformed into Hamiltonian canonical form and is solved via symplectic integrators. Based on this approach, fifth-order methods are proposed. We compare these methods with well-known existing symplectic methods. The numerical results show the efficiency of the proposed method.

MSC:

81Q05 Closed and approximate solutions to the Schrödinger, Dirac, Klein-Gordon and other equations of quantum mechanics
81-08 Computational methods for problems pertaining to quantum theory
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