Nuclear shell model and interacting boson fermion approximation

The Interacting Boson-Fermion Model (IBFM) hamiltonian is derived starting from the shell-model interaction, by a straightforward extension of the Otsuka, Arima and Iachello mapping procedure to odd-mass systems. Employing a single j-shell model and identical many nucleon systems, systematic studies...

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Bibliographic Details
Published in:Physics letters. B 1998-01, Vol.418 (1), p.13-19
Main Authors: Devi, Yelamanchili Durga, Arima, Akito, Yoshinaga, Naotaka
Format: Article
Language:English
Subjects:
Interacting Boson Fermion Model
Monopole pairing
OAI mapping, single j-shell
Quadrupole-quadrupole
Seniority conserving interaction
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Summary:The Interacting Boson-Fermion Model (IBFM) hamiltonian is derived starting from the shell-model interaction, by a straightforward extension of the Otsuka, Arima and Iachello mapping procedure to odd-mass systems. Employing a single j-shell model and identical many nucleon systems, systematic studies of spectra giving the comparison in the shell-model, SD pair truncated model and IBFM are carried out: (i) for various proportions of monopole pairing and Q· Q interactions which simulate vibrational-rotational transition; (ii) for a particular combination of these interactions together with the quadrupole pairing interaction, which conserves seniority.
ISSN:0370-2693
1873-2445
DOI:10.1016/S0370-2693(97)01363-4