The role of the Dirac sea in the quenching of Gamow-Teller strength
arXiv:nucl-th/0301074 · doi:10.1103/PhysRevLett.91.062501
Abstract
The issue of 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 non-relativistic description. This reduction is due to the antinucleon degrees of freedom.
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