A diagrammatic interpretation of formal
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Valdimír Kvasnička
📂
Article
📅
1975
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Elsevier Science
🌐
English
⚖ 751 KB
A diagammatic,interprct~tion of the formal (i.e.; without second quantization ~ormalismj quasi-degenerate Rayleigh-Sciuiidinger perturbation theory with non-hem+ian model hamiltonian is suggested. fn this appro&. : the diagrammatic expressions for the Bloch wave operator U as well as for the model