### 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 |

### Fingerprint

### ASJC Scopus subject areas

- Nuclear and High Energy Physics

### Cite this

*Physics Letters B*,

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

**Two-particle ladder diagrams and double-counting in effective interaction calculations.** / Barrett, Bruce R; Kirson, M. W.

Research output: Contribution to journal › Article

*Physics Letters B*, vol. 55, no. 2, pp. 129-133. https://doi.org/10.1016/0370-2693(75)90423-2

}

TY - JOUR

T1 - Two-particle ladder diagrams and double-counting in effective interaction calculations

AU - Barrett, Bruce R

AU - Kirson, M. W.

PY - 1975/2/3

Y1 - 1975/2/3

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0039437725&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0039437725&partnerID=8YFLogxK

U2 - 10.1016/0370-2693(75)90423-2

DO - 10.1016/0370-2693(75)90423-2

M3 - Article

AN - SCOPUS:0039437725

VL - 55

SP - 129

EP - 133

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 2

ER -