Investigation of Structure and Nuclear Shape Phase Transition in Odd Nuclei in a multi-j model
، صفحه 0-0 (1) اصل مقاله (552.94 K)
عنوان دوره: اولین دوره بین المللی و بیست و هشتمین دوره ملی (1400)
In this paper, we study the nature of the dynamics in second-order Quantum Phase Transition (QPT) between vibrational (UBF (5) ) and gamma-unstable (OBF(6)) nuclear shapes. Using a transitional Hamiltonian according to an affine SU(1,1) algebra in combination with a coherent state formalism, Shape Phase Transitions (SPT) in odd-nuclei in the framework of Interacting Boson Fermion Model (IBFM) are investigated. Classical analysis reveals a change in the system along transition in critical point. The role of a fermion with angular momentum j at the critical point on quantum phase transitions in bosonic systems is investigated via semi-classical approach. The effect of the coupling of the odd particle to an even-even boson core is discussed along the shape transition and, in particular, at the critical point.