Beta-decay half-lives set the time scale of the rapid neutron capture process (r-process), and therefore determine the production of the heavy elements in the universe. Currently, the data required by r-process mainly relies on theoretical calculations. The most commonly used model for beta-decay half-lives is proton-neutron quasiparticle random phase approximation (pnQRPA), which becomes numerically prohibitive in deformed nuclei. The implementation of finite amplitude method to pnQRPA enables its application for all nuclei without additional approximation. In this work, the pnQRPA based on the deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc) is developed by implementing finite amplitude method. The deformation effects and isoscalar pairing effects on the low-lying Gamow-Teller transitions are discussed, and their influences on beta-decay half-lives are studied.

Inviter: Xiao Lu