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Isovector and isoscalar superfluid phases in rotating nuclei
KTH, Superseded Departments, Physics.
2000 (English)In: Physical Review C. Nuclear Physics, ISSN 0556-2813, E-ISSN 1089-490X, Vol. 6205, no 5Article in journal (Refereed) Published
Abstract [en]

The subtle interplay between the two nuclear superfluids, isovector T=1, and isoscalar T=0 phases are investigated in an exactly soluble model. It is shown that T=1 and T=0 pair modes decouple in the exact calculations with the T=1 pair energy being independent of the T=0 pair strength and vice verse. In the rotating field, the isoscalar correlations remain constant in contrast to the well-known quenching of isovector pairing. An increase of the isoscalar (J=1,T=0) pair field results in a delay of the hand crossing frequency. This behavior is shown to be present only near the N=Z line and its experimental confirmation would imply a strong signature for isoscalar pairing collectivity. The solutions of the exact model are also discussed in the Hartree-Fock-Bogoliubov approximation.

Place, publisher, year, edition, pages
2000. Vol. 6205, no 5
Keyword [en]
proton-neutron correlations, n=z, t=0, alignment, energy, rb-74, model
URN: urn:nbn:se:kth:diva-20170ISI: 000165369400002OAI: diva2:338863
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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