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

B. R. Barrett, M. W. Kirson

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


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
Issue number2
StatePublished - Feb 3 1975

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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