The accurate numerical solution of the Schrödinger equation with an explicitly time-dependent Hamiltonian
2014
Abstract We show how the highly accurate and efficient Constant Perturbation (CP) technique for steady-state Schrodinger problems can be used in the solution of time-dependent Schrodinger problems with explicitly time-dependent Hamiltonians, following a technique suggested by Ixaru (2010). By introducing a sectorwise spatial discretization using bases of accurately CP-computed eigenfunctions of carefully-chosen stationary problems, we deal with the possible highly oscillatory behavior of the wave function while keeping the dimension of the resulting ODE system low. Also for the time-integration of the ODE system a very effective CP-based approach can be used.
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