The role of the Dirac sea in the quenching of Gamow-Teller strength

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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References in corpus (4)

• Asymmetric semi-infinite nuclear matter: surface and curvature properties in relativistic and non-relativistic models
• Is the Coulomb sum rule violated in nuclei?
• Delta-Hole Interaction in Nuclei and the Gamow-Teller Strength in ^90Nb
• Effects of the Dirac Sea on the Giant Monopole States

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• Feasibility of the finite amplitude method in covariant density functional theory
• Time-reversed particle-vibration loops and nuclear Gamow-Teller response
• Nuclear charge-exchange excitations based on relativistic density-dependent point-coupling model
• The Gamow-Teller Resonance in Finite Nuclei in the Relativistic Random Phase Approximation
• The Gamow-Teller States in Relativistic Nuclear Models
• The Energy-Weighted and Non Energy-Weighted Gamow-Teller Sum Rules in Relativistic Random Phase Approximation
• Gamow-Teller sum rule in relativistic nuclear models