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Efficient numerical integration of neutrino oscillations in matter

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arxiv 1611.06814 v1 pith:WNKZDVEF submitted 2016-11-21 physics.comp-ph cs.NAhep-phmath.NA

classification physics.comp-phcs.NAhep-phmath.NA
keywords numericalintegrationmatterneutrinooscillationsanalysescomputationscomputer
verification ladder T0 review T1 audit T2 compute T3 formal
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A special purpose solver, based on the Magnus expansion, well suited for the integration of the linear three neutrino oscillations equations in matter is proposed. The computations are speeded up to two orders of magnitude with respect to a general numerical integrator, a fact that could smooth the way for massive numerical integration concomitant with experimental data analyses. Detailed illustrations about numerical procedure and computer time costs are provided.

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