101 citations · 339 across the 25 of their papers we have counts for
4 papers · 1 filter
An Egorov Theorem for avoided crossings of eigenvalue surfaces
Clotilde Fermanian Kammerer, Caroline Lasser
We study nuclear propagation through avoided crossings of electron energy levels. We construct a surface hopping semigroup, which gives an Egorov-type description of the dynamics.…
Non-Hermitian propagation of Hagedorn wavepackets
Caroline Lasser, Roman Schubert, Stephanie Troppmann
We investigate the time evolution of Hagedorn wavepackets by non-Hermitian quadratic Hamiltonians. We state a direct connection between coherent states and Lagrangian frames. For t…
A new Phase Space Density for Quantum Expectations
Johannes Keller, Caroline Lasser, Tomoki Ohsawa
We introduce a new density for the representation of quantum states on phase space. It is constructed as a weighted difference of two smooth probability densities using the Husimi…
Hagedorn wavepackets in time-frequency and phase space
Caroline Lasser, Stephanie Troppmann
The Hermite functions are an orthonormalbasis of the space of square integrable functions with favourable approximation properties. Allowing for a flexible localization in position…