Hole Spectral Function and 2p1h Response Propagator.

G.A. Rijsdijk, W.J.W. Geurts, K. Allaart, W.H. Dickhoff

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    The fragmentation of one-nucleon knock-out strength at low energies is considered from the viewpoint of the two particle-one hole (and two hole-one particle) response propagator. The aim is to deal with particle-particle (and hole-hole) as well as particle-hole collectivity simultaneously. This is achieved on a Tamm-Dancoff level by the so-called Faddeev approximation of the 2p1h propagator. Results of this approach illustrate the relevance of this consistent treatment of both particle-particle (hole-hole) and particle-hole collectivity. A further extension, within the framework of 2p1h RPA which was sometimes applied in the past, has serious unsolved problems, some of which are discussed in detail.
    Original languageEnglish
    Pages (from-to)201-213
    JournalPhysical Review C
    Publication statusPublished - 1996


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