{
  "id": "2211.00279",
  "version": "v1",
  "published": "2022-11-01T05:17:01.000Z",
  "updated": "2022-11-01T05:17:01.000Z",
  "title": "Microscopic formulation of the interacting boson model for reflection asymmetric nuclei",
  "authors": [
    "Kosuke Nomura"
  ],
  "comment": "20 pages, 12 figures; Invited contribution submitted to the Special Issue \"Reflection Asymmetry in Atomic Nuclei\" in Int. J. Mod. Phys. E",
  "categories": [
    "nucl-th",
    "nucl-ex"
  ],
  "abstract": "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.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-11-01T05:17:01.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "interacting boson model",
      "reflection asymmetric nuclei",
      "microscopic formulation",
      "intriguing nuclear structure phenomena",
      "octupole shapes"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 20,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}