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    The effect of site-specific spectral densities on the high-dimensional exciton-vibrational dynamics in the FMO complex

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    Date
    2017
    Author
    Schulze, Jan
    Shibl, Mohamed F.
    Al-Marri, Mohammed J.
    Kühn, Oliver
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    Abstract
    The coupled exciton-vibrational dynamics of a three-site model of the FMO complex is investigated using the Multi-layer Multi-configuration Time-dependent Hartree (ML-MCTDH) approach. Emphasis is put on the effect of the spectral density on the exciton state populations as well as on the vibrational and vibronic non-equilibrium excitations. Models which use either a single or site-specific spectral densities are contrasted to a spectral density adapted from experiment. For the transfer efficiency, the total integrated Huang-Rhys factor is found to be more important than details of the spectral distributions. However, the latter are relevant for the obtained non-equilibrium vibrational and vibronic distributions and thus influence the actual pattern of population relaxation. 1 2017 Elsevier B.V.

    DOI/handle
    http://dx.doi.org/10.1016/j.chemphys.2017.09.007
    http://hdl.handle.net/10576/16133
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    • GPC Research [‎140 ‎ items ]

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