原子核形状相变的玻色子代数模型理论

The boson algebraic model for nuclear shape phase transition

原子核结构演化的形状相变理论进一步加深并扩展了人们对复杂核结构现象背后物理规律的认识与理解.基于玻色子代数模型框架,本文对核形状相变的基本概念以及该领域中一些核心问题的研究现状进行介绍和评述.讨论的主题包括:形状相图、相变序参量、临界点动力学对称性、相共存与雅可比型相变等,并对形状相变理论的进一步发展和有待解决的问题进行简要概括.

The shape phase transition (SPT) theory of nuclear structure evolution may further deepen and expand our recognition and understanding of the principles underlying phenomena associated with complex nuclear structures.In this work,the basic concepts of nuclear SPTs and the current research status of some core issues in this field are reviewed based on the boson algebraic model framework.The topics include shape phase diagram,order parameters of phase transitions,dynamical symmetry at the critical point,phase coexistence,and Jacobi-type transitions.A summary of further developments of the SPT theory and some unresolved issues that need to be addressed is also provided.