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Octupole vibrations and ground state correlations

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

The relationship between ground-state correlations and collectiveness is investigated for the case of low-lying nonrotational states in the rare earth nuclei. Both octupole and quadrupole modes of excitation are studied and the quasiparticle virtual populations associated with each of them are discussed. The relative importance of particle-particle and particle-hole interaction matrix elements is also analyzed in connection with the shape of the correlation patterns. The fundamental role of the Nilsson + BCS scheme is emphasized and the consistency of the quasiparticle random-phase approximation is established.

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Author notes

  1. E. S. Hernández (Member)

    Present address: Laboratorio de Sincrociclotrón, Comisión, Nacional de Energia Atómica, Buenos Aires, Argentina

Authors and Affiliations

  1. Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina

    E. S. Hernández (Member)

  2. Departamento de Física, Facultad de Ciencias Exactas, Universidad de La Plata, La Plata, Argentina

    A. Piastino (Member)

  3. The Carrera del Investigador of the Consejo National de Investigaciones Científicas y Técnicas of Argentina, Argentina

    E. S. Hernández (Member) & A. Piastino (Member)

Authors
  1. E. S. Hernández
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  2. A. Piastino
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Additional information

It is a pleasure to acknowledge interesting discussions with Lic. O. Civitarese. The staff at the Computer Centre of the University of La Plata (CESPI) is also to be thanked for their assistance in the course of the numerical work. The authors are also indebted to Prof. Dr. A. Faessler for helpful comments.

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Hernández, E.S., Piastino, A. Octupole vibrations and ground state correlations. Z Physik A 273, 253–258 (1975). https://doi.org/10.1007/BF01410006

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  • DOI: https://doi.org/10.1007/BF01410006

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