The tensor part of the Skyrme energy density functional. III. Time-odd terms at high spin

TL;DR

This paper investigates how time-odd tensor terms in the Skyrme energy density functional influence superdeformed rotational bands, focusing on their effects on energies, moments of inertia, and quasi-particle spectra at high spin.

Contribution

It systematically analyzes the impact of time-odd tensor terms on high-spin properties within the cranked Hartree-Fock-Bogoliubov framework, expanding understanding of tensor effects in nuclear models.

Findings

Tensor terms significantly affect energies and moments of inertia.

Variations in coupling constants alter quasi-particle spectra.

Finite-size instabilities are identified and analyzed.

Abstract

This article extends previous studies on the effect of tensor terms in the Skyrme energy density functional by breaking of time-reversal invariance. We have systematically probed the impact of tensor terms on properties of superdeformed rotational bands calculated within the cranked Hartree-Fock-Bogoliubov approach for different parameterizations covering a wide range of values for the isoscalar and isovector tensor coupling constants. We analyze in detail the contribution of the tensor terms to the energies and dynamical moments of inertia and study their impact on quasi-particle spectra. Special attention is devoted to the time-odd tensor terms, the effect of variations of their coupling constants and finite-size instabilities.