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Microscopic approach to collective motion

P. Bonche·E. Chabanat·B. Q. Chen·J. Dobaczewski·H. Flocard·B. Gall·P. H. Heenen·J. Meyer·N. Tajima·M. S. Weiss
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Abstract

An overview of a microscopic framework based on the Hartree-Fock description of the mean field is presented which, starting from an effective interaction allows a description of collective motions. A study of the isotope shifts in the Pb region illustrates the importance of the effective interactions and points to their limitations. Such forces should be improved in order to achieve a better description of nuclei properties especially with the coming availability of exotic beam facilities. The coupling of collective quadrupole and octupole degrees of freedom in $^{194}$Pb is analyzed within the Generator Coordinate Method, which represents a step beyond the simple mean-field approximation. As a last example, we present a study of nuclear rotations. First we discuss results on superdeformed rotating bands in $^{192}$Hg, $^{194}$Hg and $^{194}$Pb obtained without including a treatment of pairing correlations. Preliminary calculations are also presented with these correlations included as well as an approximate projection on nucleon number. Email contact: paul@amoco.saclay.cea.fr

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P. Bonche, E. Chabanat, B. Q. Chen, J. Dobaczewski, H. Flocard, B. Gall, P. H. Heenen, J. Meyer, N. Tajima, M. S. Weiss. 1993-09-15. Microscopic approach to collective motion. https://doi.org/10.1016/0375-9474(94)90045-0

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