Time Reversible Integration of the Landau-Lifshitz-Gilbert Equation
Abstract
A method for time-reversible numerical integration of the deterministic Landau-Lifshitz Gilbert equation by means of a second order Suzuki-Trotter decomposition is presented and tested against commonly used second order predictor-corrector methods. We find the time-reversibility of the Suzuki-Trotter integrator to be superior by several orders of magnitude while the computational effort is similar. Calculations of trajectories backwards in time are useful, for example, when evaluating dynamical corrections to transition state theory.
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