Role of the Dirac sea in the quenching of Gamow-Teller strength.
The issue of the Gamow-Teller sum rule in atomic nuclei is reexamined in the framework of a relativistic description of nuclei. It is shown that the total Gamow-Teller strength in the nucleon sector is reduced by about 12% as compared to the prediction of a nonrelativistic description. This reduction is due to the antinucleon degrees of freedom.
Kurasawa
Haruki
H
Department of Physics, Faculty of Science, Chiba University, Chiba 263-8522, Japan.
Suzuki
Toshio
T
Giai
Nguyen Van
NV