Spectra of Anti-Nucleons in the Vacuum of Finite Nuclei

MAO Guang-Jun

Chinese Physics C> 2004, Vol. 28> Issue(12) : 1356-1360

Spectra of Anti-Nucleons in the Vacuum of Finite Nuclei

MAO Guang-Jun ^,

Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,ChinaInstitute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100080,ChinaCCAST World Lab.,Beijing 100080,China

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Abstract：
The quantum vacuum in a many–body system of finite nuclei has been investigated within the relativistic Hartree approach which describes the bound states of nucleons and anti–nucleons consistently. The contributions of the dirac sea to the source terms of the meson–field equations are taken into account up to the one–nucleon loop and one-meson loop. the tensor couplings for the ω–and ρ–meson are included in the model. After adjusting the parameters of the model to the properties of spherical nuclei, a large effective nucleon mass m*/m_n≈0.78 is obtained. the overall nucleon spectra of shell–model states are in agreement with the data. The computed anti–nucleon spectra in the vacuum differ about 20—30MeV with and without the tensor–coupling effects.

References

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MAO Guang-Jun. Spectra of Anti-Nucleons in the Vacuum of Finite Nuclei[J]. Chinese Physics C, 2004, 28(12): 1356-1360.

MAO Guang-Jun. Spectra of Anti-Nucleons in the Vacuum of Finite Nuclei[J]. Chinese Physics C, 2004, 28(12): 1356-1360. shu

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Received: 2003-11-29
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Spectra of Anti-Nucleons in the Vacuum of Finite Nuclei

Corresponding author: MAO Guang-Jun,

Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,ChinaInstitute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100080,ChinaCCAST World Lab.,Beijing 100080,China

Received Date: 2003-11-29

Accepted Date: 1900-01-01

Available Online: 2004-12-05

Abstract: The quantum vacuum in a many–body system of finite nuclei has been investigated within the relativistic Hartree approach which describes the bound states of nucleons and anti–nucleons consistently. The contributions of the dirac sea to the source terms of the meson–field equations are taken into account up to the one–nucleon loop and one-meson loop. the tensor couplings for the ω–and ρ–meson are included in the model. After adjusting the parameters of the model to the properties of spherical nuclei, a large effective nucleon mass m*/m_n≈0.78 is obtained. the overall nucleon spectra of shell–model states are in agreement with the data. The computed anti–nucleon spectra in the vacuum differ about 20—30MeV with and without the tensor–coupling effects.

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Spectra of Anti-Nucleons in the Vacuum of Finite Nuclei

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