Proton-neutron pairing and alpha-type condensation in nuclei

被引：0

作者：

Sandulescu, N. ^{[1
]}

Negrea, D. ^{[1
]}

Gambacurta, D. ^{[2
]}

机构：

[1] Natl Inst Phys & Nucl Engn, POB MG-6, Bucharest 76900, Romania

[2] Ist Nazl Fis Nucl, Sez Catania, I-95123 Catania, Italy

来源：

NUCLEAR STRUCTURE AND DYNAMICS '15 | 2015年 / 1681卷

关键词：

RICH NUCLEI;

D O I：

10.1063/1.4932274

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页数：4

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