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Shell structure fingerprints of tensor interaction
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Physics.
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2009 (English)In: European Physical Journal A, ISSN 1434-6001, E-ISSN 1434-601X, Vol. 42, no 3, 577-581 p.Article in journal (Refereed) Published
Abstract [en]

We address the consequences of strong tensor terms in the local energy density functional, resulting from fits to the f(5/2)-f(7/2) splittings in Ca-40, Ca-48, and Ni-56. In this study, we focus on the tensor contribution to the nuclear binding energy. In particular, we show that it exhibits an interesting topological feature closely resembling that of the shell correction. We demonstrate that in the extreme single-particle scenario at spherical shape, the tensor contribution shows tensorial magic numbers equal to N(Z) = 14, 32, 56, and 90, and that this structure is smeared out due to configuration mixing caused by pairing correlations and migration of proton/neutron sub-shells with neutron/proton shell filling. Based on a specific Skyrme-type functional SLy4(T), we show that the proton tensorial magic numbers shift with increasing neutron excess to Z = 14, 28, and 50.

Place, publisher, year, edition, pages
2009. Vol. 42, no 3, 577-581 p.
Keyword [en]
NEUTRON-STAR DENSITIES, SKYRME PARAMETRIZATION, NUCLEI, SUBNUCLEAR, PART
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-30374DOI: 10.1140/epja/i2008-10768-1ISI: 000273035200048Scopus ID: 2-s2.0-73649138813OAI: oai:DiVA.org:kth-30374DiVA: diva2:401422
Note
QC 20110302Available from: 2011-03-02 Created: 2011-02-24 Last updated: 2017-12-11Bibliographically approved

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