Zero- and finite-temperature electromagnetic strength distributions in closed- and open-shell nuclei from first principles

Ab initio approaches to the nuclear many-body problem have seen their reach considerably extended over the past decade. However, collective excitations have been scarcely addressed so far due to the prohibitive cost of solving the corresponding equations of motion. Here, a numerically efficient method to compute electromagnetic response functions at zero-and finite-temperature in superfluid and deformed nuclei from an ab initio standpoint is presented and applied to O-16, Si-28, Ti-46, and Fe-56. This work opens the path to systematic ab initio calculations of nuclear responses to electroweak probes across a significant portion of the nuclear chart.

Automated summary

Ab initio approaches to the nuclear many-body problem have been extended, and a numerically efficient method for calculating electromagnetic response functions in superfluid and deformed nuclei is presented. This work allows systematic ab initio calculations of nuclear responses to electroweak probes across a significant portion of the nuclear chart.