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Collocation on uniform grids

Paolo Amore1, Francisco M Fernández2, Ricardo A Sáenz1 and Koen Salvo1

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In this paper we derive four sets of sinc-like functions, defined on a finite interval and obeying different boundary conditions. The functions in each set are orthogonal and their nodes are uniformly distributed on the interval. We have applied each set to solve a large class of eigenvalue equations, with different boundary conditions, both on finite intervals and on the real line, showing that precise numerical results can be obtained efficiently and rapidly. A comparison with results available in the literature is also performed.


PACS

03.65.Ge Solutions of wave equations: bound states

03.65.Fd Algebraic methods

03.65.Db Functional analytical methods

MSC

15A18 Eigenvalues, singular values, and eigenvectors

81R15 Operator algebra methods (See also 46Lxx, 81T05)

47A75 Eigenvalue problems (See also 49R50)

81Q05 Closed and approximate solutions to the Schrödinger, Dirac, Klein-Gordon and other quantum-mechanical equations

Subjects

Quantum information and quantum mechanics

Dates

Issue 11 (20 March 2009)

Received 6 October 2008, in final form 22 January 2009

Published 23 February 2009



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