The dynamics of excitation transfer coupled to an environment which can be modelled by oscillator degrees of freedom plays an important role for many basic phenomena in molecular and condensed matter...
Spin-Boson Hamiltonian and Optical Absorption of Molecular Dimers (1999)
Koch, Christiane, Esser, Bernd
An analysis of the eigenstates of a symmetry-broken spin-boson Hamiltonian is performed by computing Bloch and Husimi projections. The eigenstate analysis is combined with the calculation of...
Mixed Quantum-Classical versus Full Quantum Dynamics: Coupled Quasiparticle-Oscillator System (1996)
The relation between the dynamical properties of a coupled quasiparticle-oscillator system in the mixed quantum-classical and fully quantized descriptions is investigated. The system is considered to...
Transfer and Decay of an Exciton Coupled to Vibrations in a Dimer (1996)
Schanz, Holger, Barvik, Ivan, Esser, Bernd
Transfer and decay dynamics of an exciton coupled to a polarization vibration in a dimer is investigated in a mixed quantum-classical picture with the exciton decay incorporated by a sink site. Using...
Nonadiabatic couplings and incipience of quantum chaos (1996)
The quantization of the electronic two site system interacting with a vibration is considered by using as the integrable reference system the decoupled oscillators resulting from the adiabatic...
Nonlinearity and trapping in excitation transfer: Dimers and Trimers. (1995)
Barvik, Ivan, Esser, Bernd, Schanz, Holger
We study the interplay between nonlinearity in exciton transport and trapping due to a sink site for the dimer and the trimer with chain configuration by a numerical integration of the discrete...
Excitonic - vibronic coupled dimers: A dynamic approach (1995)
The dynamical properties of exciton transfer coupled to polarization vibrations in a two site system are investigated in detail. A fixed point analysis of the full system of Bloch - oscillator...
Zugl.: Bonn, Univ., Diss., 1995.