Nuclear Seminar - Anton Repko (8.10.2025)
Wednesday 8.10.2025 at 14:00, Lecture room F1/364
RNDr. Anton Repko, Ph.D. (Department of Nuclear Physics, Institute of Physics SAS):
Calculations of low-lying excited states in atomic nuclei by Skyrme QRPA method
Abstract:
Density functionals (of Skyrme, Gogny or Relativistic Mean Field type) are commonly employed for the theoretical description of ground and excited states of nuclei. They are based on phenomenological interactions, and provide a microscopic description mainly for even-even nuclei along the whole nuclear chart, including deformation. The first step consists in the calculation of ground state by HFB (Hartree-Fock-Bogoliubov) or HF+BCS, and can be followed by GCM (Generator Coordinate Method) or QRPA (Quasiparticle Random Phase Approximation). My research is focused on the implementation of QRPA on top of spherical and axially-deformed ground states computed by Skyrme HF+BCS. I developed also corrections for spuriosity, which are crucial for low-lying excitations of multipolarity 1– (E1) and 0+ (E0), where we predict isoscalar vortical currents (24Mg,58Ni: 1–) and pairing vibrations (254No: 0+).