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Spin symmetry in Dirac negative-energy spectrum in density-dependent relativistic Hartree-Fock theory

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Abstract

The spin symmetry in the Dirac negative-energy spectrum and its origin are investigated for the first time within the density-dependent relativistic Hartree-Fock (DDRHF) theory. Taking the nucleus 16O as an example, the spin symmetry in the negative-energy spectrum is found to be a good approximation and the dominant components of the Dirac wave functions for the spin doublets are nearly identical. In comparison with the relativistic Hartree approximation where the origin of spin symmetry lies in the equality of the scalar and vector potentials, in DDRHF the cancellation between the Hartree and Fock terms is responsible for the better spin symmetry properties and determines the subtle spin-orbit splitting. These conclusions hold even in the case when significant deviations from the G -parity values of the meson-antinucleon couplings occur.

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Authors and Affiliations

  1. State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, 100871, Beijing, China

    Haozhao Liang, Wen Hui Long & Jie Meng

  2. Institut de Physique Nucléaire, IN2P3-CNRS and Université Paris-Sud, F-91406, Orsay Cedex, France

    Haozhao Liang & Nguyen Van Giai

  3. Physik-Department der Technischen Universität München, D-85748, Garching, Germany

    Wen Hui Long

  4. School of Physics and Nuclear Energy, Beihang University, 100191, Beijing, China

    Jie Meng

  5. Department of Physics, University of Stellenbosch, Stellenbosch, South Africa

    Jie Meng

Authors
  1. Haozhao Liang
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  2. Wen Hui Long
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  3. Jie Meng
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  4. Nguyen Van Giai
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Corresponding author

Correspondence to Jie Meng.

Additional information

Communicated by W. Nazarewicz

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Liang, H., Hui Long, W., Meng, J. et al. Spin symmetry in Dirac negative-energy spectrum in density-dependent relativistic Hartree-Fock theory. Eur. Phys. J. A 44, 119–124 (2010). https://doi.org/10.1140/epja/i2010-10938-6

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  • DOI: https://doi.org/10.1140/epja/i2010-10938-6

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