A nuclear mass formula based on SU(4) symmetry

Abstract : It is argued that mass anomalies at the N≈Z line are associated with SU(4) isospin-spin symmetry. Drawing on these arguments, a Weizsäcker-type nuclear mass formula is investigated which has the eigenvalue of the quadratic Casimir operator of SU(4) as a Wigner term. This SU(4)-based mass formula yields a better agreement than the one with the usual Wigner term |N—Z|/A. In addition, the SU(4) eigenvalue expression adequately replaces the usual pairing term of the Weizsäcker formula giving a lower overall rms deviation than the latter.
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Article dans une revue
Foundations of Physics, Springer Verlag, 1997, 27, pp.1047-1060
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Soumis le : mercredi 19 mai 2004 - 11:46:40
Dernière modification le : jeudi 11 janvier 2018 - 06:28:19

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P. Van Isacker, O. Juillet, B.K. Gjelsten. A nuclear mass formula based on SU(4) symmetry. Foundations of Physics, Springer Verlag, 1997, 27, pp.1047-1060. 〈in2p3-00021828〉

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