Electromagnetic transitions with effective operators

Ionel Stetcu, Bruce R. Barrett, Petr Navrátil, Calvin W. Johnson

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

In the no-core shell model formalism we compute effective one- and two-body operators, using the Lee-Suzuki procedure within the two-body cluster approximation. We evaluate the validity of the latter through calculations in reduced model spaces. In particular, we test the results for the two-body system and find that indeed the effective operators in the reduced space reproduce the expectation values or transition strengths computed in the full space. On the other hand, the renormalization for operators in the case of 6Li is very weak, suggesting the need for higher-body clusters in computing the effective interaction.

Original languageEnglish (US)
Pages (from-to)95-103
Number of pages9
JournalInternational Journal of Modern Physics E
Volume14
Issue number1
DOIs
StatePublished - Feb 1 2005

Keywords

  • Effective operators
  • Electromagnetic transitions
  • Nucleon-nucleon interaction
  • Shell model

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy(all)

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