## Abstract

We suggested earlier that the energies of low-lying states in large shell-model spaces converge to their exact values exponentially as a function of the dimension in progressive truncation. An algorithm based on this exponential convergence method was proposed and successfully used for describing the ground state energies in the lowest |δ(N-Z)| nuclides from ^{42}Ca to ^{56}Ni using the fp-shell model and the FPD6 interaction. We extend this algorithm to describe nonyrast states, especially those that exhibit a large collectivity, such as the superdeformed band in ^{56}Ni. We also show that a similar algorithm can be used to calculate expectation values of observables, such as single-particle occupation probabilities.

Original language | English |
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Article number | 034303 |

Pages (from-to) | 343031-343037 |

Number of pages | 7 |

Journal | Physical Review C - Nuclear Physics |

Volume | 67 |

Issue number | 3 |

State | Published - Mar 1 2003 |

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