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

Bruce R Barrett, M. W. Kirson

Research output: Contribution to journalArticle

6 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)129-133
Number of pages5
JournalPhysics Letters B
Volume55
Issue number2
DOIs
StatePublished - Feb 3 1975

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ladders
counting
diagrams
matrices
interactions
perturbation
nuclei
expansion
excitation
energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

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

In: Physics Letters B, Vol. 55, No. 2, 03.02.1975, p. 129-133.

Research output: Contribution to journalArticle

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