43 citations · 47 across the 6 of their papers we have counts for
5 papers · 1 filter
Open Quantum Systems Driven by Chirped Pulses: Quantized versus Semiclassical Fields and the Validity of the Rotating-Wave Approximation
Justin Zhengjie Tan, Frank Großmann, Yiying Yan +2
Population transfer via chirped rapid adiabatic passage is studied using open quantum and semiclassical models, with and without the rotating-wave approximation. A time-dependent v…
Higher order Magnus expansions for driven two-level quantum dynamics
Chen Wei, Frank Großmann
We investigate the Magnus expansion for a generic time-dependent two-level system under single-axis driving.By virtue of the su(2) Lie algebra, the expansion is decomposed into a c…
Quench dynamics of interacting bosons: generalized coherent states versus multi-mode Glauber states
Yulong Qiao, Frank Grossmann
Multi-mode Glauber coherent states (MMGS) as well as Bloch states with zero quasi-momentum, which are a special case of generalized coherent states (GCS), are frequently used to de…
Coupled coherent states method for tunneling dynamics: an interpretative study
Frank Grossmann
Numerical solutions of the time-dependent Schrödinger equation based on the variational principle may offer physical insight that cannot be gained by a solution using fixed grids i…
Long-time and unitary properties of semiclassical initial value representations
C. Harabati, J. M. Rost, F. Grossmann
We numerically compare the semiclassical ``frozen Gaussian'' Herman-Kluk propagator [Chem. Phys. 91, 27 (1984)] and the ``thawed Gaussian'' propagator put forward recently by Baran…