Abstract
The Tamm-Dancoff approximation is applied to the correlated FBCS ground state. This procedure proves very successful for medium and heavy nuclei both superconducting and non-superconducting. The accuracy of the Tamm-Dancoff approximation is equivalent to forth order boson methods. Calculations have been performed for the nickel isotopes, for Sn114 and for the lead isotopes. The connection with the broken-pair approximation is established. The influence of a nucleus withN−2 nucleons on the spectrum of a nucleus withN particles is exhibited.
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I am greatly indebted to Prof. H. J. Mang for many stimulating discussions. I am grateful to Prof. J. O. Rasmussen for communicating to me the results of his Shell-Model calculation for Sn114. I acknowledge helpful comments of Drs. H. Schmidt and A. Kamlah. The numerical calculations have been made possible with the aid of the “Kommission für elektronisches Rechnen der Bayerischen Akademie der Wissenschaften”.
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Kleber, M. Description of collective 0+ states in the Tamm-Dancoff approximation. Z. Physik 231, 421–433 (1970). https://doi.org/10.1007/BF01642533
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DOI: https://doi.org/10.1007/BF01642533