Determination of the active space in molecular dynamics by a time-dependent wave operator method

The time-dependent wave operator formalism is used to describe the quantum dynamics of molecular systems. It is shown that the wave function, if correctly normalized at each moment of time, is the solution of an “instantaneous eigenvalue equation.” This result is verified in the case of an harmonic...

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Veröffentlicht in:The Journal of chemical physics 1997-10, Vol.107 (16), p.6290-6298
Hauptverfasser: Jolicard, Georges, Tuckey, Philip A., Billing, Gert Due
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container_title The Journal of chemical physics
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creator Jolicard, Georges
Tuckey, Philip A.
Billing, Gert Due
description The time-dependent wave operator formalism is used to describe the quantum dynamics of molecular systems. It is shown that the wave function, if correctly normalized at each moment of time, is the solution of an “instantaneous eigenvalue equation.” This result is verified in the case of an harmonic oscillator with a linear perturbation. It is further shown that the resulting time-dependent “eigenvalue” can be used to obtain the eigenvalues of the Floquet eigenvectors participating in the dynamics, and constituting the target space of the system. This is illustrated by a numerical example, concerning the photodissociation of the H2+ ion in a continuous electromagnetic field.
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title Determination of the active space in molecular dynamics by a time-dependent wave operator method
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