Ab initio computations of the electric dipole response in nuclei

by Dr Francesca Bonaiti (FRIB Theory Fellow,Michigan State University)

Thursday 18 Jun 2026, 13:30 → 15:30 Asia/Tokyo

RIBF Large Meeting Room (RIBF 2F)

Abstract:

Properties of the electric dipole response in nuclei, such as electric dipole polarizabilities, provide a unique connection between nuclear structure studies and astrophysics. In fact, they strongly correlate with parameters determining the nuclear matter equation of state at saturation density, while shedding light at the same time on the collective excitations of the nucleus at low energy. 

Computing the dipole polarizability is a challenging task that requires the knowledge of both bound and continuum excited states of the nucleus. Today, thanks to advances in many-body theory and high performance computing, we can calculate this quantity from first principles for increasingly large systems and provide estimates of our theoretical uncertainties.

In this talk, I will present recent advances in ab initio calculations of the electric dipole polarizability, encompassing light neutron-rich and medium-mass nuclei, at closed shells and in their vicinity, and compare theoretical predictions with available experimental data. I will also discuss new developments based on time-dependent approaches, which enable a dynamical description and visualization of collective dipole modes.