Diagrammatic analysis of adiabatic and time-independent perturbation theory for degenerate energy levels |
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| Authors: | M.A.J. Michels L.G. Suttorp |
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| Affiliation: | Instituut voor Theoretische Fysica, Universiteit van Amsterdam, Amsterdam, The Netherlands |
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| Abstract: | ![]()
Time-ordered folded diagrams are used to represent the effective hamiltonian in the adiabatic formalism. Resummation of the diagrams is shown to give a term-by-term correspondence with time-independent perturbation theory. |
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