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- W2092552021 abstract "The Constrained Adiabatic Trajectory Method (CATM) is reexamined as an integrator for the Schrodinger equation. An initial discussion places the CATM in the context of the different integrators used in the literature for time-independent or explicitly time-dependent Hamiltonians. The emphasis is put on adiabatic processes and within this adiabatic framework the interdependence between the CATM, the wave operator, the Floquet and the (t,t') theories is presented in detail. Two points are then more particularly analysed and illustrated by a numerical calculation describing the $H_2^+$ ion submitted to a laser pulse. The first point is the ability of the CATM to dilate the Hamiltonian spectrum and thus to make the perturbative treatment of the equations defining the wave function possible, possibly by using a Krylov subspace approach as a complement. The second point is the ability of the CATM to handle extremely complex time-dependencies, such as those which appear when interaction representations are used to integrate the system." @default.
- W2092552021 created "2016-06-24" @default.
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- W2092552021 date "2012-01-04" @default.
- W2092552021 modified "2023-10-18" @default.
- W2092552021 title "Constrained adiabatic trajectory method: A global integrator for explicitly time-dependent Hamiltonians" @default.
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- W2092552021 doi "https://doi.org/10.1063/1.3673320" @default.
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