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arXiv · 1906.11232

Collective treatment of the isovector pair correlations. Boson representation

G. Nikoghosyan·E. A. Kolganova·D. A. Sazonov·R. V. Jolos
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Abstract

The theoretical approach to consideration of the Hamiltonian with pairing forces using a technique of the finite boson representation is developed. It is shown that a simultaneous description of the pairing vibrational state in $^{56}$Ni and the pairing rotational states with $T$=0 in the neighboring $N=Z$ nuclei is possible if the pairing Hamiltonian takes into account only isovector monopole pairing. However, the calculated energies of the pairing rotational states of $N=Z$ nuclei removed from $^{56}$Ni by 12 and more nucleons exceed significantly the experimental values. The possible reason of this discrepancy is discussed.

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G. Nikoghosyan, E. A. Kolganova, D. A. Sazonov, R. V. Jolos. 2019-06-26. Collective treatment of the isovector pair correlations. Boson representation. https://doi.org/10.1140/epja/i2019-12897-8

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