Effects of Three-body Forces and Relativistic Effect on Equation of State of Nuclear Matter

ZUO Wei

Chinese Physics C> 2002, Vol. 26> Issue(11) : 1134-1141

Effects of Three-body Forces and Relativistic Effect on Equation of State of Nuclear Matter

ZUO Wei ^,

Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator,Lanzhou 730000,China2 Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China3 INFN LNS,44 Via S. Sofia,I 95123 Catania,Italy

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Abstract：
Within Brueckner-Hartree-Fock framework,the equation of state of nuclear matter has been investigated by adopting the charge dependent Argonne V₁₈ two-body realistic force and the microscopic three-body forces based on a meson-exchange model. The contributions to the equation of state from the three-body forces due to different microscopic elementary processes have been calculated and discussed carefully. It is shown by comparing with the results from the relativistic Dirac-BHF approach that the main relativistic correction to nuclear equation of state can be-reproduced fairly well by the present Brueckner-Hartree-Fock calculations including only the three-body force originated from the scalar σ meson exchange coupling to the virtual excitation of a nucleon-antinucleon pair. However,the effects of the three body forces due to other processes can not be cancelled completely with each other,and even around the saturation density of nuclear matter,their net contribution is not neglegible.

References

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ZUO Wei. Effects of Three-body Forces and Relativistic Effect on Equation of State of Nuclear Matter[J]. Chinese Physics C, 2002, 26(11): 1134-1141.

ZUO Wei. Effects of Three-body Forces and Relativistic Effect on Equation of State of Nuclear Matter[J]. Chinese Physics C, 2002, 26(11): 1134-1141. shu

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Received: 2001-11-30
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

Effects of Three-body Forces and Relativistic Effect on Equation of State of Nuclear Matter

Corresponding author: ZUO Wei,

Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator,Lanzhou 730000,China2 Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China3 INFN LNS,44 Via S. Sofia,I 95123 Catania,Italy

Received Date: 2001-11-30

Accepted Date: 1900-01-01

Available Online: 2002-11-05

Abstract: Within Brueckner-Hartree-Fock framework,the equation of state of nuclear matter has been investigated by adopting the charge dependent Argonne V₁₈ two-body realistic force and the microscopic three-body forces based on a meson-exchange model. The contributions to the equation of state from the three-body forces due to different microscopic elementary processes have been calculated and discussed carefully. It is shown by comparing with the results from the relativistic Dirac-BHF approach that the main relativistic correction to nuclear equation of state can be-reproduced fairly well by the present Brueckner-Hartree-Fock calculations including only the three-body force originated from the scalar σ meson exchange coupling to the virtual excitation of a nucleon-antinucleon pair. However,the effects of the three body forces due to other processes can not be cancelled completely with each other,and even around the saturation density of nuclear matter,their net contribution is not neglegible.

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Effects of Three-body Forces and Relativistic Effect on Equation of State of Nuclear Matter

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