Spectral Deferred Correction Methods for Ordinary Differential Equations |
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Authors: | Alok Dutt Leslie Greengard Vladimir Rokhlin |
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Affiliation: | (1) Bank of America, 1 Alie Street, London, E1 8DE, England;(2) Courant Institute of Mathematical Sciences, New York University, New York, NY, 10012, USA.;(3) Departments of Mathematics and Computer Science, Yale University, New Haven, CT 06520, USA |
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Abstract: | We introduce a new class of methods for the Cauchy problem for ordinary differential equations (ODEs). We begin by converting the original ODE into the corresponding Picard equation and apply a deferred correction procedure in the integral formulation, driven by either the explicit or the implicit Euler marching scheme. The approach results in algorithms of essentially arbitrary order accuracy for both non-stiff and stiff problems; their performance is illustrated with several numerical examples. For non-stiff problems, the stability behavior of the obtained explicit schemes is very satisfactory and algorithms with orders between 8 and 20 should be competitive with the best existing ones. In our preliminary experiments with stiff problems, a simple adaptive implementation of the method demonstrates performance comparable to that of a state-of-the-art extrapolation code (at least, at moderate to high precision).Deferred correction methods based on the Picard equation appear to be promising candidates for further investigation. |
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Keywords: | Spectral methods initial value problems deferred correction stiffness |
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