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Zbl 0940.65082
Simos, T.E.; Williams, P.S.
On finite difference methods for the solution of the Schrödinger equation.
(English)
[J] Comput. Chem. 23, No.6, 513-554 (1999). ISSN 0097-8485

A review of finite difference methods used for the solution of the radial Schrödinger equation is presented. This equation has the form $$y''(x)+[E- l(l+1)/x^2- V(x)] y(x)= 0,$$ $x\in [0,\infty)$ where the potential function $V(x)$ satisfies $V(x)\to 0$ $(x\to+\infty)$, $E$ is a real constant and $l$ a given integer. Usually this equation is supplemented with boundary conditions $y(0)= 0$ together with a second condition for $x\to+\infty$.\par Since the authors (particularly the first one) have a large number of publications related to the numerical solution of this equation this survey paper gives a very complete overview of the subject. The paper is organized as follows: First of all they present the main properties that are relevant for the numerical methods to be used for this problem. Then they give an overview of the different types of methods. Finally, a number of numerical experiments have been presented to compare the behaviour of the different methods for Wood-Saxon type potentials.\par The paper ends with some interesting remarks on the efficiency of the methods proposed for this type of equations.
[M.Calvo (Zaragoza)]
MSC 2000:
*65L10 Boundary value problems for ODE (numerical methods)
65L12 Finite difference methods for ODE
34L40 Particular ordinary differential operators

Keywords: finite difference methods; boundary value problems; radial Schrödinger equation; numerical experiments; Wood-Saxon type potentials

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