101 citations · 339 across the 25 of their papers we have counts for
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Separation of scales: Dynamical approximations for composite quantum systems
Irene Burghardt, Rémi Carles, Clotilde Fermanian Kammerer +2
We consider composite quantum-dynamical systems that can be partitioned into weakly interacting subsystems, similar to system-bath type situations. Using a factorized wave function…
Adiabatic and non-adiabatic evolution of wave packets and applications to initial value representations
Clotilde Kammerer, Caroline Lasser, Didier Robert
We review some recent results obtained for the time evolution of wave packets for systems of equations of pseudo-differential type, including Schr{ö}dinger ones, and discuss their…
The Gaussian Wave Packet Transform via Quadrature Rules
Paul Bergold, Caroline Lasser
We analyse the Gaussian wave packet transform. Based on the Fourier inversion formula and a partition of unity, which is formed by a collection of Gaussian basis functions, a new r…
Computing quantum dynamics in the semiclassical regime
Caroline Lasser, Christian Lubich
The semiclassically scaled time-dependent multi-particle Schrödinger equation describes, inter alia, quantum dynamics of nuclei in a molecule. It poses the combined computational c…
Propagation of Wave Packets for Systems Presenting Codimension 1 Crossings
Clotilde Fermanian-Kammerer, Caroline Lasser, Didier Robert
We analyze the propagation of coherent states through general systems of pseudodifferential form associated with Hamiltonian presenting codimension one eigen-value crossings. In pa…