Symmetric approximations for the evoluti
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T.Yu. Mikhailova; V.I. Pupyshev
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Article
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1999
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Elsevier Science
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English
⚖ 62 KB
The Lie-algebra technique is employed to construct symmetric expansions for the evolution operator of a molecular i Ž Ž . . system with the Hamiltonian H q V. An efficient representation for the evolution operator exp y H q V t s 0 0 up to the fifth order in time.