Off-shell effects in nuclear matter from an EFT point of view.

B. V. Krippa, M. C. Birse, J. A. McGovern, Niels Walet

    Research output: Chapter in Book/Report/Conference proceedingConference contribution


    Effective field theory requires all observables to be independent of the representation used for the quantum field operators. Off-shell parts of the in-medium vertex functions depend on the particular representation so that off-shell properties of the interactions should not lead to any observable effects. We analyze this issue in the context of many-body approaches to nuclear matter, where it should be possible to shift into three-body force the contributions from purely off-shell two-body interactions. None of the commonly used truncations of the two-body scattering amplitude such as the ladder, Brueckner-Hartree-Fock or parquet approxns. respect this requirement. [on SciFinder (R)]
    Original languageEnglish
    Title of host publicationAIP Conference Proceedings
    Publication statusPublished - 2003


    • Nuclear model (many-body; many-body approaches to nuclear matter); Field theory; Nuclear matter (off-shell effects in nuclear matter from effective field theory point of view)


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