Quantum phase transitions in odd-A nuclei: The effect of the odd particle from spherical to oblate shapes

11th International Spring Seminar on Nuclear Physics: Shell Model and Nuclear Structure – achievements of the past two decades

Böyükata, M.^1 ; Alonso, C.E.^2 ; Arias, J.M.^2 ; Fortunato, L.^3 ; Vitturi, A.^3

Department of Elementary Science Education, Faculty of Education, Çanakkale Onsekiz Mart University, Çanakkale

TR-17100, Turkey^1

Departamento de Física Atómica, Molecular y Nuclear, Universidad de Sevilla, Sevilla

ES-41080, Spain^2

Dipartimento di Fisica e Astronomia G. Galilei, Università di Padova, INFN, Padova

IT-35131, Italy^3

关键词: Control parameters;    Geometric shape;    Interacting bosons;    Oblate shape;    Quantum phase transitions;    Shape phase transition;    Single particle;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/580/1/012047/pdf
DOI  :  10.1088/1742-6596/580/1/012047

来源: IOP

【 摘 要 】

Quantum shape-phase transitions in odd-nuclei are investigated within the framework of the interacting boson-fermion model (IBFM). We consider the case of a single-j fermion coupled to an even-even boson core that performs a transition from spherical to oblate shapes varying a control parameter in the boson Hamiltonian. The aim of this work is to see the effect of the coupling of the unpaired fermion on the transition, to understand how the coupled single particle modifies the geometric shape of the system and how each of the odd states behaves when the boson core shifts along the transitional path.