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APS » Journals » Phys. Rev. Lett. » Volume 98 » Issue 13
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Phys. Rev. Lett. 98, 132502 (2007) [4 pages]

Empirical Proton-Neutron Interactions and Nuclear Density Functional Theory: Global, Regional, and Local Comparisons

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M. Stoitsov1,2,3, R. B. Cakirli4,5, R. F. Casten4, W. Nazarewicz1,2,6, and W. Satuła6
1Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
2Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
3Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia, Bulgaria
4Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520, USA
5Department of Physics, University of Istanbul, Istanbul, Turkey
6Institute of Theoretical Physics, Warsaw University, Warsaw, Poland

Received 7 November 2006; published 27 March 2007

Calculations of nuclear masses, using nuclear density functional theory, are presented for even-even nuclei spanning the nuclear chart. The resulting binding energy differences can be interpreted in terms of valence proton-neutron interactions. These are compared globally, regionally, and locally with empirical values. Overall, excellent agreement is obtained. Discrepancies highlight neglected degrees of freedom and can point to improved density functionals.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.98.132502
DOI:
10.1103/PhysRevLett.98.132502
PACS:
21.30.Fe, 21.10.Dr, 21.60.Jz, 71.15.Mb
 
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