Properties of isoscalar-pair condensates

It is pointed out that the ground state of $n$ neutrons and $n$ protons in a single-$j$ shell,interacting through an isoscalar ($T=0$) pairing force, is not paired, $J=0$, but rather spin-aligned, $J=n$.This observation is explained in the context of a model of isoscalar $P$ ($J=1$) pairs,which is m...

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Bibliographic Details
Published in:Physical review. C 2016-08, Vol.94 (2), Article 024324
Main Authors: Van Isacker, P., Macchiavelli, A. O., Fallon, P., Zerguine, S.
Format: Article
Language:English
Subjects:
NUCLEAR PHYSICS AND RADIATION PHYSICS
Nuclear Theory
Physics
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Summary:It is pointed out that the ground state of $n$ neutrons and $n$ protons in a single-$j$ shell,interacting through an isoscalar ($T=0$) pairing force, is not paired, $J=0$, but rather spin-aligned, $J=n$.This observation is explained in the context of a model of isoscalar $P$ ($J=1$) pairs,which is mapped onto a system of $p$ bosons, leading to an approximate analytic solutionof the isoscalar-pairing limit in $jj$ coupling.
ISSN:2469-9985
2469-9993
DOI:10.1103/PhysRevC.94.024324