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Open system dynamics approach to polyatomic molecules: Excitons in chromophore complexes
Author(s) -
May Volkhard
Publication year - 2006
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.21181
Subject(s) - chromophore , exciton , dissipative system , femtosecond , ultrashort pulse , quantum , physics , master equation , laser , quantum dynamics , polyatomic ion , chemical physics , quantum mechanics , chemistry , molecule
An introduction to the dissipative quantum dynamics description of molecular system is presented based on the definition of a reduced density operator $\hat{\rho}$ (t) for the system under consideration. Methods are reviewed that have been used to calculate $\hat{\rho}$ (t) with emphasis on an approximate equation of motion known as the quantum master equation. The inclusion of external ultrafast fields is particularly accounted for, and a brief description of femtosecond laser pulse control experiments is given. Different applications are mentioned, concentrating on the description of Frenkel‐exciton dynamics in biological chromophore complexes (photosynthetic antennae). Finally, recent achievements guiding exciton transfer by tailored femtosecond laser pulses are considered. © 2006 Wiley Periodicals, Inc. Int J Quantum Chem, 2006