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arXiv 1708.09602physics.chem-phphysics.bio-ph
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特定位置光谱密度对FMO复合物中高维激子振动动力学的影响

The Effect of Site-Specific Spectral Densities on the High-Dimensional Exciton-Vibrational Dynamics in the FMO Complex

Jan Schulze, Mohamed Shibl, Mohamed Al-Marri, Oliver Kühn

摘要:

采用多层多组态含时Hartree(ML-MCTDH)方法研究了FMO复合物三位模型的激子-振动耦合动力学。重点放在激子态布居的光谱密度的影响,以及振动和振动电子非平衡激发。使用单一或特定地点的频谱密度的模型进行对比,从实验中改编的频谱密度。对于传输效率,总的集成黄-里斯因子被发现是更重要的比细节的光谱分布。然而,后者是相关的非平衡振动和电子振动分布,从而影响实际的布居弛豫模式。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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