### Abstract

It is shown that including the two-particle ladder diagrams, computed with the Barrett, Hewitt, McCarthy G matrix elements at a starting energy of 47 MeV and for intermediate excitations of 2ℏΩ, in the perturbation expansion for the effective two-body interaction in mass-18 nuclei involves a double-counting of roughly 42%. It is argued by comparison that the double-counting should be roughly the same when the Kuo G matrix elements are used.

Original language | English (US) |
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Pages (from-to) | 129-133 |

Number of pages | 5 |

Journal | Physics Letters B |

Volume | 55 |

Issue number | 2 |

DOIs | |

State | Published - Feb 3 1975 |

### ASJC Scopus subject areas

- Nuclear and High Energy Physics

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## Cite this

Barrett, B. R., & Kirson, M. W. (1975). Two-particle ladder diagrams and double-counting in effective interaction calculations.

*Physics Letters B*,*55*(2), 129-133. https://doi.org/10.1016/0370-2693(75)90423-2