Evaluation of the 3rd Order Perturbations for the Degenerate Cases |
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| Authors: | Aba Teleki Teodor Obert |
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| Affiliation: | (1) Department of Physics, Faculty of Natural Sciences, Constantine the Philosopher University, Tr. A. Hlinku 1, SK-949 74 Nitra, Slovakia;(2) Department of Chemical Physics, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, SK-812 37 Bratislava, Slovakia |
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| Abstract: | In the calculation of quantum systems in most cases, the perturbation theory is used. Lot of calculation techniques are used for both (nondegenerate and degenerate) cases. In our contribution we evaluate the projection operator technique in such case when the Hamiltonian of the given quantum system has point spectrum with finite degree of degeneracy. |
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