Computer Simulation of the Anisotropy of Fluorescence in Ring Molecular Systems: Influence of Disorder and Ellipticity

We use massively parallelized system for computer simulation of time dependence of the anisotropy of fluorescence for the ring LH2 from Rhodopseudomonas acidophila with tangential optical transition dipole arrangements. Different models of uncorrelated static disorder and also ellipticity (correlated static disorder) in local molecular energies are taken into account. Dynamical disorder, interaction with a bath, is included in Markovian approximation of the equations of motion for the so called exciton density matrix. In this paper we compare the results for two different models of the spectral density of phonon bath.