Electric dipole polarizability: a pathway from finite nuclei to the nuclear matter equation of
state
Francesca Bonaiti
(Oak Ridge National Laboratory)
(Oak Ridge National Laboratory)
Nuclear electromagnetic observables, 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, 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 nuclei at closed shells and in their vicinity, and I will show how we can exploit artificial neural networks to estimate this observable across the nuclear chart and extract information about nuclear matter. I will also discuss new developments allowing for a description of electromagnetic responses in a time-dependent framework.
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 nuclei at closed shells and in their vicinity, and I will show how we can exploit artificial neural networks to estimate this observable across the nuclear chart and extract information about nuclear matter. I will also discuss new developments allowing for a description of electromagnetic responses in a time-dependent framework.