Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2001-12-17
Phys.Rev. C65 (2002) 054322
Physics
Nuclear Physics
Nuclear Theory
21 pages REVTEX, 13 eps figures, submitted to Phys. Rev. C
Scientific paper
10.1103/PhysRevC.65.054322
We investigate the effects of the spin-isospin channel of the Skyrme energy functional on predictions for Gamow-Teller distributions and superdeformed rotational bands. We use the generalized Skyrme interaction SkO' to describe even-even ground states and then analyze the effects of time-odd spin-isospin couplings, first term by term and then together via linear regression. Some terms affect the strength and energy of the Gamow-Teller resonance in finite nuclei without altering the Landau parameter g_0' that to leading order determines spin-isospin properties of nuclear matter. Though the existing data are not sufficient to uniquely determine all the spin-isospin couplings, we are able to fit them locally. Altering these coupling constants does not change the quality with which the Skyrme functional describes rotational bands.
Bender Martin
Dobaczewski Jacek
Engel Johannes
Nazarewicz Witek
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