Abstract
In this work, we give the general framework for constructing trigonometrically fitted symplectic Runge–Kutta–Nyström (RKN) methods from symplectic trigonometrically fitted partitioned Runge–Kutta (PRK) methods. We construct RKN methods from PRK methods with up to five stages and fourth algebraic order. Numerical results are given for the two-body problem and the perturbed two-body problem.
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Monovasilis, T., Kalogiratou, Z. & Simos, T.E. Construction of Exponentially Fitted Symplectic Runge–Kutta–Nyström Methods from Partitioned Runge–Kutta Methods. Mediterr. J. Math. 13, 2271–2285 (2016). https://doi.org/10.1007/s00009-015-0587-2
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DOI: https://doi.org/10.1007/s00009-015-0587-2