Unraveling the quantum state mixing of excitonic and vibronic excitations in the dynamics of molecular aggregates
We report on dissipative exciton dynamics calculations performed with the hierarchy equations of motion method for a molecular heterodimer coupled to a multi-mode Brownian oscillator bath. Coherent oscillations in the population dynamics after initial excitation of the highest exciton state are analysed in terms of a Fourier spectrum and compared to the exciton-vibronic structure of the dimer eige