Phase coexistence in transitional nuclei and the interacting-boson model

被引：210

作者：

Iachello, F ^{[1
]}

Zamfir, NV

Casten, RF

机构：

[1] Yale Univ, Sloane Phys Lab, Ctr Theoret Phys, New Haven, CT 06520 USA

[2] Yale Univ, WNSL, New Haven, CT 06520 USA

[3] Clark Univ, Worcester, MA 01610 USA

[4] Inst Atom Phys, R-76900 Bucharest, Romania

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.81.1191

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Recent data provide evidence for coexisting phases at low energy in the spherical-deformed transitional nucleus Sm-152. The nature of the wave functions at the spherical-deformed phase transition in nuclei is analyzed within the framework of the interacting-boson model. It is shown that in the U(5)-SU(3) transition, two phases coexist in a very small region of parameter space around the critical value of the control parameter xi. The coexistence region with two minima in the potential shrinks to zero as one moves to the U(5)-O(6) transition. Implications for other systems are briefly mentioned. [S0031-9007(98)06839-2].

引用

页码：1191 / 1194

页数：4

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