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Author Sandulescu, N. ♦ Negrea, D. ♦ Gambacurta, D.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ ATOMIC AND MOLECULAR PHYSICS ♦ COMPARATIVE EVALUATIONS ♦ CONDENSATES ♦ ELECTRON CORRELATION ♦ EXACT SOLUTIONS ♦ GROUND STATES ♦ HAMILTONIANS ♦ ISOSPIN ♦ ISOVECTORS ♦ MEAN-FIELD THEORY ♦ NEUTRONS ♦ NUCLEI ♦ PAIRING INTERACTIONS ♦ PROTONS
Abstract We summarize a recent work (N. Sandulescu et al, arXiv:1507.04144) on isoscalar and isovector proton-neutron pairing treated in a formalism which conserves exactly the particle number and the isospin. The formalism is designed for self-conjugate (N=Z) systems of nucleons moving in an axially deformed mean field and interacting through the most general isovector and isoscalar pairing interactions. The ground state of these systems is described by a superposition of two types of condensates, i.e., condensates of isovector quartets, built by two isovector pairs coupled to the total isospin T=0, and condensates of isoscalar proton-neutron pairs. The comparison with the exact solutions of realistic isovector-isoscalar pairing Hamiltonians shows that this formalism is able to describe accurately the pairing correlations energies. It is also shown that, contrary to the majority of HFB calculations, in the present formalism the isovector and isoscalar pairing correlations coexist together for any pairing interactions.
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-10-15
Publisher Place United States
Volume Number 1681
Issue Number 1


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