Charge-exchange excitations with finite range interactions including tensor terms

TL;DR

This paper investigates charge-exchange excitations in doubly magic nuclei using a self-consistent Hartree-Fock plus RPA model with finite-range interactions, highlighting the significant impact of tensor forces on experimental agreement.

Contribution

It introduces the use of Gogny-like finite-range interactions with tensor terms in modeling charge-exchange excitations, demonstrating their importance in theoretical predictions.

Findings

Tensor forces significantly affect excitation calculations.

Inclusion of tensor terms improves agreement with experimental data.

Finite-range interactions with tensor forces are essential for accurate modeling.

Abstract

We study charge-exchange excitations in doubly magic-nuclei by using a self-consistent Hartree-Fock plus Random Phase Approximation model. We use four Gogny-like finite-range interactions, two of them containing tensor forces. We investigate the effects of the various parts of the tensor forces in the two computational steps of our model, and we find that their presence is not negligible and improves the agreement with the experimental data.