Gaussian wave packet dynamics and the Landau-Zener model for nonadiabatic transitions

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The Landau-Zener model for transitions between two linear diabatic potentials is examined. We derive, in the weak-coupling limit, an expression for the transition probability where the classical trajectory and the constant velocity approximations are abandoned and replaced by quantum dynamics described by a Gaussian wavepacket. A remarkable agreement with the results from the simple Landau-Zener formula is observed.
Original languageEnglish
JournalChemical Physics Letters
Issue number6
Pages (from-to)620-625
Publication statusPublished - 1992

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