Role of the Dirac sea in the quenching of Gamow-Teller strength.

Phys Rev Lett

Department of Physics, Faculty of Science, Chiba University, Chiba 263-8522, Japan.

Published: August 2003

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.

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http://dx.doi.org/10.1103/PhysRevLett.91.062501DOI Listing

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