Listar Institut Universitari de Matemàtiques i Aplicacions de Castelló (IMAC) por autoría "c12e37c9-7f28-4751-83b2-1d36fbfff1c9"
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Applying splitting methods with complex coefficients to the numerical integration of unitary problems
Blanes, Sergio; Casas, Fernando; Escorihuela-Tomàs, Alejandro American Institute of Mathematical Sciences (AIMS) (2022)We explore the applicability of splitting methods involving complex coefficients to solve numerically the time-dependent Schr¨odinger equation. We prove that a particular class of integrators are conjugate to unitary ... -
Composition Methods for Dynamical Systems Separable into Three Parts
Casas, Fernando; Escorihuela-Tomàs, Alejandro MDPI (2020)New families of fourth-order composition methods for the numerical integration of initial value problems defined by ordinary differential equations are proposed. They are designed when the problem can be separated into ... -
High order integrators obtained by linear combinations of symmetric-conjugate compositions
Casas, Fernando; Escorihuela-Tomàs, Alejandro Elsevier (2022-02-01)A new family of methods involving complex coefficients for the numerical integration of differential equations is presented and analyzed. They are constructed as linear combinations of symmetric-conjugate compositions ... -
Runge–Kutta–Nyström symplectic splitting methods of order 8
Blanes, Sergio; Casas, Fernando; Escorihuela-Tomàs, Alejandro Elsevier (2022-12)Different families of Runge–Kutta–Nyström (RKN) symplectic splitting methods of order 8 are presented for second-order systems of ordinary differential equations and are tested on numerical examples. They show a better ...