Titlebook: Explicitly Correlated Wave Functions in Chemistry and Physics; Theory and Applicati Jacek Rychlewski Book 2003 Springer Science+Business Me

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Quantum Chemical Calculations on Positronic Systemss and spin equal to those of the electron, but with the opposite (positive) charge. The particle itself has been detected in the cosmic rays by Anderson [2] in 1933, whereas in 1946 Wheeler predicted the possibility of the stability of positronic complex systems [3]. These systems decay by annihilat

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Resonance States of Atomstiply excited. In the one-electron picture they correspond to multiply-excited electron configurations. If the description of electron correlation is considered, that of a highly excited system is much more demanding than for the ground or singly excited state of the same system. In a multiply excit

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https://doi.org/10.1007/978-3-7091-9842-1ion and are not easily accessible to the observation due to their short lifetimes (typically not exceeding 1 ns). They appeared to be a real challenge for the standard methods of computational quantum chemistry.

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