Abstract
An error analysis of variational integrators is obtained, by blowing up the discrete variational principles, all of which have a singularity at zero time-step. Divisions by the time step lead to an order that is one less than observed in simulations, a deficit that is repaired with the help of a new past–future symmetry.
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G. W. Patrick is funded by the Natural Sciences and Engineering Reseach Council, Canada.
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Patrick, G.W., Cuell, C. Error analysis of variational integrators of unconstrained Lagrangian systems. Numer. Math. 113, 243–264 (2009). https://doi.org/10.1007/s00211-009-0245-3
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DOI: https://doi.org/10.1007/s00211-009-0245-3