Programme

O.15 -- Oral, VCTP-49

Date: Friday, 2 August 2024

Time: 16:40 - 17:05

Analysis of nuclear stability and deformation using spherical Skyrme HFBCS QRPA

Nguyen Le Anh

Department of Physics, Ho Chi Minh City University of Education (HCMUE), Ho Chi Minh City, Viet Nam

The spherical Hartree-Fock (HF) Bardeen-Cooper-Schrieffer (BCS) quasiparticle random-phase approximation (QRPA) using Skyrme forces can explore the stability and softness of nuclei against quadrupole, octupole [1], and hexadecapole deformations [2]. Within the spherical self-consistent mean-field framework, the ground-state deformation of even-even nuclei can be identified when the HFBCS-QRPA stability matrix is not positive-definite [3]. Conversely, if the RPA stability matrix is positive-definite, static polarizability can serve as an indicator of stiffness. This method offers a computationally light and theoretically sound approach to identify potential softness or deformation in nuclei. By highlighting the influence of the shell-driving mechanism, our research provides insights into the evolutionary aspects of nuclear deformation. Acknowledgment: This work was funded by the Master, PhD Scholarship Programme of Vingroup Innovation Foundation (VINIF), code VINIF.2023.TS.003. References: [1] B. Minh Loc, N. Le Anh, P. Papakonstantinou, and N. Auerbach (2023). Phys. Rev. C, 108, 024303. [2] N. Le Anh, B. Minh Loc, P. Papakonstantinou, and N. Auerbach (2024). Phys. Rev. C, 109, 024313. [3] A. Abbas, N. Auerbach, N. Van Giai, and L. Zamick (1981). Nucl. Phys. A, 367(2), 189-196.

Presenter: Nguyen Le Anh