10TH International workshop on quantum phase transitions in nuclei and many-body systems

Wobbling and chiral bands with non-axial quasiparticle alignments

Jul 14, 2022, 12:35 PM

20m

IUC

Novel aspects and signatures of QPTs in nuclei Novel aspects and signatures of QPTs in nuclei

Speaker

Radu Budaca ("Horia Hulubei" National Institute of Physics and Nuclear Engineering)

Description

The variation of spectral characteristics of the wobbling and chiral partner bands and the associated dynamics inferred by non-axial quasiparticle alignments with arbitrary tilting [1] is investigated within a semiclassical approach to the particle-rotor Hamiltonian [2,3]. The results for the alignment of the valence h11/2 nucleons are investigated as a function of total angular momentum and the angles of their tilting with respect to the principal axes of the triaxial core. It will be shown that the nucleus undergoes a transition through a variety of distinct dynamical phases which arise in specific ranges of tilting angles and total angular momentum. Few examples are provided as experimental realizations of the discussed dynamics.

[1] R. Budaca, Phys. Lett. B. 817, 136308 (2021).
[2] R. Budaca, Phys. Rev. C. 98, 014303 (2018).
[3] R. Budaca, Phys. Lett. B. 797, 134853 (2019).

Presentation materials

budaca_radu_dubrovnik.pdf