论文标题
相互作用的玻色子模型的微观公式，用于反射不对称核
Microscopic formulation of the interacting boson model for reflection asymmetric nuclei
论文作者
论文摘要
反射不对称，核中的八极形状是核结构的重要方面，并且在过去几十年中经常研究。使用放射性离子束的最新实验为稳定的八极形状提供了证据。相关的理论分析已采用多种核模型。我们回顾了有关相互作用的玻色子模型中核八极形状和集体激发的最新研究。通过使用基于核密度功能理论框架的平均场方法，将特殊的重点放在了该模型的显微镜公式上。作为一个说明性的例子，稳定的八极变形和形状相变为核子数的函数，涉及四极杆和八极自由度，在光acTacinides中显示出发生。系统的光谱研究表明，在广泛的质量区域中，八杆的集体性提高。八杆和其他自由度之间的耦合以微观方式纳入了玻色子系统，并在描述相关有趣的核结构现象（例如形状共存）中起着至关重要的作用。
Reflection asymmetric, octupole shapes in nuclei are a prominent aspect of nuclear structure, and have been recurrently studied over the decades. Recent experiments using radioactive-ion beams have provided evidence for stable octupole shapes. A variety of nuclear models have been employed for the related theoretical analyses. We review recent studies on the nuclear octupole shapes and collective excitations within the interacting boson model. A special focus is placed on the microscopic formulation of this model by using the mean-field method that is based on the framework of nuclear density functional theory. As an illustrative example, a stable octupole deformation, and a shape phase transition as a function of nucleon number that involves both quadrupole and octupole degrees of freedom are shown to occur in light actinides. Systematic spectroscopic studies indicate enhancement of the octupole collectivity in a wide mass region. Couplings between the octupole and additional degrees of freedom are incorporated in a microscopic manner in the boson system, and shown to play a crucial role in the description of the related intriguing nuclear structure phenomena such as the shape coexistence.
