By Marco Schröter
Marco Schröter investigates the impact of the neighborhood atmosphere at the exciton dynamics inside molecular aggregates, which construct, e.g., the light-harvesting complexes of vegetation, micro organism or algae through the hierarchy equations of movement (HEOM) technique. He addresses the subsequent questions intimately: How can coherent oscillations inside a process of coupled molecules be interpreted? What are the alterations within the quantum dynamics of the procedure for expanding coupling energy among digital and nuclear levels of freedom? To what volume does decoherence govern the strength move homes of molecular aggregates?.
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Additional resources for Dissipative Exciton Dynamics in Light-Harvesting Complexes
Note that peaks with a signiﬁcant vibrational contribution, cf. discussion of Fig. e. the peaks corresponding to the vibronic progression in the panels c and d of Fig. 1, show a stronger line broadening for increasing γ˜ than peaks with mainly electronic character. This is due to the stronger interaction of vibrationally excited states with the bath in comparison to the vibrational ground state. 1. : Population dynamics of the highest diabatic (upper row) and adiabatic (lower row) states for the four dimer scenarios (˜ γ = 50 cm−1 : solid red line, γ˜ = 200 cm−1 : dashed blue line).
Dissipative quantum dynamics due to the conservation of energy and momentum. The integer numbers ji account for the possibility of multiple interactions of the sample with the same pulse. The phase-matching condition, Eq. 145), limits the observable signal in the experiment to certain contributions of the overall nonlinear signal. This gives rise to a variety of diﬀerent nonlinear spectroscopy techniques focussing on special contributions. Frequently, third order spectroscopy techniques are used to investigate the excitation energy transport in molecular aggregates and other processes.
For non-oscillatory components γk is real, thus k = k. In contrast to the other summations, which are performed with respect to k, Eq. 80) and Eq. 81), the summation which accounts for the inﬂuence of the residual part of the correlation function, Eq. 82), is performed with respect to the physical system operator index ζ, cf. Eq. 32), to avoid a multiple counting of the residual contributions. The constant Δζ can be calculated using the coeﬃcients of the residual part of the correlation function, cf.
Dissipative Exciton Dynamics in Light-Harvesting Complexes by Marco Schröter