Polynomial Lie algebra methods in solving the second-harmonic generation model: some exact and approximate calculations

Details Polynomial Lie algebra methods in solving the second-harmonic generation model: some exact and approximate calculations Polynomial Lie algebra methods in solving the second-harmonic generation model: some exact and approximate calculations

2001-12-07

arxiv.org/abs/quant-ph/0112040v1

Physics

Quantum Physics

LaTex file, 13 pages, 3 figures

Scientific paper

10.1016/S0375-9601(02)00178-0

We compare exact and SU(2)-cluster approximate calculation schemes to determine dynamics of the second-harmonic generation model using its reformulation in terms of a polynomial Lie algebra $su_{pd}(2)$ and related spectral representations of the model evolution operator realized in algorithmic forms. It enabled us to implement computer experiments exhibiting a satisfactory accuracy of the cluster approximations in a large range of characteristic model parameters.

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