256 citations · 2.6k across the 81 of their papers we have counts for
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Semiclassical Dynamics of the Jaynes-Cummings Model
Adrian Alscher, Hermann Grabert
The semiclassical approximation of coherent state path integrals is employed to study the dynamics of the Jaynes-Cummings model. Decomposing the Hilbert space into subspaces of giv…
Classical and quantum dynamics of a spin-1/2
Adrian Alscher, Hermann Grabert
We reply to a comment on `Semiclassical dynamics of a spin-1/2 in an arbitrary magnetic field'.
Centrifugal terms in the WKB approximation and semiclassical quantization of hydrogen
Joachim Hainz, Hermann Grabert
A systematic semiclassical expansion of the hydrogen problem about the classical Kepler problem is shown to yield remarkably accurate results. Ad hoc changes of the centrifugal ter…
Semiclassical dynamics of a spin-1/2 in an arbitrary magnetic field
Adrian Alscher, Hermann Grabert
The spin coherent state path integral describing the dynamics of a spin-1/2-system in a magnetic field of arbitrary time-dependence is considered. Defining the path integral as the…
Semiclassical Density Matrix Near the Top of a Barrier
F. J. Weiper, J. Ankerhold, H. Grabert
Employing the path integral approach, we calculate the semiclassical equilibrium density matrix of a particle moving in a nonlinear potential field for coordinates near the top of…
Dissipative Quantum Systems with Potential Barrier. General Theory and Parabolic Barrier
Joachim Ankerhold, Hermann Grabert, Gert-Ludwig Ingold
We study the real time dynamics of a quantum system with potential barrier coupled to a heat-bath environment. Employing the path integral approach an evolution equation for the ti…