31.10.+z Theory of electronic structure, electronic transitions, and chemical binding (for theory and mathematical methods applied to electronic structure of biomolecules, see 87.10.-e)
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We present an approach to the correlated dynamics of many-electron systems. We show, that the twoelectron reduced density matrix (2RDM) can provide a suitable description of the real time evolution of a system. To achieve this, the hierarchy of equations of motion must be truncated in a practical way. Also, the computational effort, given that the 2RDM is represented by products of two-electron determinants, is discussed, and numerical model calculations are presented.