STSM by Philipp Marquetand and Matthias Ruckenbauer, University of Vienna, Wien (AT) with Tamas Rozgonyi, Hungarian Academy of Sciences,Budapest (HU)
On July 21th, 2014 (6 days)
From AUSTRIA to HUNGARY
Adiabatic elimination for strong-field ionization with quantum dynamics
We develop a simplified theoretical description and the corresponding code for the quantum-dynamics simulation of strong-field multiphoton ionization. Any occurring intermediate off-resonant states are not treated explicitly in the propagation but removed by adiabatic elimination (ADEL) from the system of equations of motion. For the representation of the ionization continuum, a Legendre-polynomial based discretization ansatz (DIC) is used.
In this STSM, we evaluated various critical assumptions in the ADEL for the case of one-dimensional quantum-dynamics (QD). Especially, the validity of neglecting the kinetic energy on the states to be eliminated in the ADEL and the applicability of the multiphoton rotating wave approximation required in-depth consideration. The final equations of motion were integrated in a QD code and first tests showed an excellent agreement between the propagations of the full system including off-resonant states and when using ADEL.
In discussion with Prof. Dr. Thomas Weinacht (Stony Brook University) who was on a research visit in Budapest during the STSM we agreed on a concrete joint project for a mixed theoretical-experimental publication.
