Effective operators from exact many-body renormalization

A. F. Lisetskiy, M. K G Kruse, Bruce R Barrett, P. Navratil, I. Stetcu, J. P. Vary

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We construct effective two-body Hamiltonians and E2 operators for the p shell by performing 16 Ω ab initio no-core shell model (NCSM) calculations for A=5 and A=6 nuclei and explicitly projecting the many-body Hamiltonians and E2 operator onto the 0 Ω space. We then separate the effective E2 operator into one-body and two-body contributions employing the two-body valence cluster approximation. We analyze the convergence of proton and neutron valence one-body contributions with increasing model space size and explore the role of valence two-body contributions. We show that the constructed effective E2 operator can be parametrized in terms of one-body effective charges giving a good estimate of the NCSM result for heavier p-shell nuclei.

Original languageEnglish (US)
Article number024315
JournalPhysical Review C - Nuclear Physics
Volume80
Issue number2
DOIs
StatePublished - Aug 28 2009

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operators
valence
nuclei
neutrons
protons
estimates
approximation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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Lisetskiy, A. F., Kruse, M. K. G., Barrett, B. R., Navratil, P., Stetcu, I., & Vary, J. P. (2009). Effective operators from exact many-body renormalization. Physical Review C - Nuclear Physics, 80(2), [024315]. https://doi.org/10.1103/PhysRevC.80.024315

Effective operators from exact many-body renormalization. / Lisetskiy, A. F.; Kruse, M. K G; Barrett, Bruce R; Navratil, P.; Stetcu, I.; Vary, J. P.

In: Physical Review C - Nuclear Physics, Vol. 80, No. 2, 024315, 28.08.2009.

Research output: Contribution to journalArticle

Lisetskiy, A. F. ; Kruse, M. K G ; Barrett, Bruce R ; Navratil, P. ; Stetcu, I. ; Vary, J. P. / Effective operators from exact many-body renormalization. In: Physical Review C - Nuclear Physics. 2009 ; Vol. 80, No. 2.
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