https://doi.org/10.1140/epja/i2016-16183-1
Regular Article - Theoretical Physics
Gogny interactions with tensor terms
1
Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, E-18071, Granada, Spain
2
Dipartimento di Matematica e Fisica “E. De Giorgi”, Università del Salento and INFN Sezione di Lecce, Via Arnesano, I-73100, Lecce, Italy
3
Dipartimento di Matematica e Fisica “E. De Giorgi”, Università del Salento, Via Arnesano, I-73100, Lecce, Italy
4
Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, F-91406, Orsay Cedex, France
* e-mail: mangui@ugr.es
Received:
10
February
2016
Revised:
21
April
2016
Accepted:
4
May
2016
Published online:
1
July
2016
We present a perturbative approach to include tensor terms in the Gogny interaction. We do not change the values of the usual parameterisations, with the only exception of the spin-orbit term, and we add tensor terms whose only free parameters are the strengths of the interactions. We identify observables sensitive to the presence of the tensor force in Hartree-Fock, Hartree-Fock-Bogoliubov and random phase approximation calculations. We show the need of including two tensor contributions, at least: a pure tensor term and a tensor-isospin term. We show results relevant for the inclusion of the tensor term for single-particle energies, charge-conserving magnetic excitations and Gamow-Teller excitations.
© SIF, Springer-Verlag Berlin Heidelberg, 2016
