The physical aspects of the primary charge separation process in bacterial photosynthesis are discussed. The donor-acceptor model of electron tranfer through proteins is used. The kinetics of the processes of the photosynthetic reaction centers are considered and their energetic scheme is constructed by means of the nonequilibrium density matrix method. It is shown that the theory is in good agreement with experiment if one takes into account the influence of vibrational sublevels of states which take part in transitions.
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