The Gamow-Teller Resonance in Finite Nuclei in the Relativistic Random Phase Approximation
Nuclear Theory
2009-11-10 v1
Abstract
Gamow-Teller(GT) resonances in finite nuclei are studied in a fully consistent relativistic random phase approximation (RPA) framework. A relativistic form of the Landau-Migdal contact interaction in the spin-isospin channel is adopted. This choice ensures that the GT excitation energy in nuclear matter is correctly reproduced in the non-relativistic limit. The GT response functions of doubly magic nuclei Ca, Zr and Pb are calculated using the parameter set NL3 and =0.6 . It is found that effects related to Dirac sea states account for a reduction of 6-7 % in the GT sum rule.
Keywords
Cite
@article{arxiv.nucl-th/0308021,
title = {The Gamow-Teller Resonance in Finite Nuclei in the Relativistic Random Phase Approximation},
author = {Zhong-Yu Ma and Bao-Qiu Chen and Nguyen Van Giai and Toshio Suzuki},
journal= {arXiv preprint arXiv:nucl-th/0308021},
year = {2009}
}
Comments
9 pages, 1 figure