The effect of site-specific spectral densities on the high-dimensional exciton-vibrational dynamics in the FMO complex
| Author | Schulze, Jan |
| Author | Shibl, Mohamed F. |
| Author | Al-Marri, Mohammed J. |
| Author | Kühn, Oliver |
| Available date | 2020-09-17T11:12:40Z |
| Publication Date | 2017 |
| Publication Name | Chemical Physics |
| Resource | Scopus |
| ISSN | 3010104 |
| 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. |
| Sponsor | This work was made possible by NPRP grant #NPRP 7-227-1-034 from the years. Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors. One of the authors (O.K.) gratefully acknowledges practical help with the MCTDH code and many stimulating discussions with H.-D. Meyer (Heidelberg) during the last 17 |
| Language | en |
| Publisher | Elsevier B.V. |
| Subject | Exciton-vibrational coupling FMO complex Frenkel excitons Photosynthesis Quantum dynamics |
| Type | Article |
| Pagination | 16-Oct |
| Volume Number | 497 |
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GPC Research [465 items ]