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- W2039893338 endingPage "832" @default.
- W2039893338 startingPage "777" @default.
- W2039893338 abstract "In this tutorial-style article we discuss the time-independent perturbation formalism of Brandow for effective interactions and operators in a nonrigorous, intuitive way. The simple example of a 2ifmmodetimeselsetexttimesfi{}2 matrix is used to introduce the basic concepts, for instance the notion of folded diagrams. The same example is used subsequently in a discussion of the branch points arising from level crossings and the associated convergence difficulties with the perturbation series. Numerical calculations of the effective interaction and the effective charge are then reviewed, focussing, for the most part, on the ($1s0d$) shell. Whenever possible, simple physical models are used to illustrate the results. A fairly comprehensive summary of the calculations to date is given, and we attempt to synthesize and draw conclusions." @default.
- W2039893338 created "2016-06-24" @default.
- W2039893338 creator A5013193573 @default.
- W2039893338 creator A5075564420 @default.
- W2039893338 date "1977-10-01" @default.
- W2039893338 modified "2023-09-30" @default.
- W2039893338 title "An introductory guide to effective operators in nuclei" @default.
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