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《中国物理C》（英文）编辑部
2024年10月30日
Chinese Physics C> 2005, Vol. 29> Issue(7) : 632-638 

Kaon Condensation in Neutron Star Matter and Nuclear Three-Body Force Effect

  •  Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China2 School of Physics and Technology,Lanzhou University,Lanzhou 730000,China3 Graduate School of Chinese Academy of Sciences,Beijing 100049,China4 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator Lanzhou 730000,China

  • Within the framework of the Brueckner-Hartree-Fock approach, the effects of a microscopic nuclear three-body force on the critical density for kaon condensation in neutron star matter and on the composition of the kaon condensed phase have been investigated. The nuclear three-body force turns out to affect considerably both the critical density for kaon condensation and the composition of the kaon condensed phase in neutron stars via its strongly effect on the high-density behavior of nuclear symmetry energy. It is shown that inclusion of the three-body force contribution in the symmetry energy leads to a reduction of the critical density for kaon condensation and the three-body force effect on the critical density decreases as the proton strangeness content increases. The kaon condensed phase of neutron star matter turns out to be proton-rich instead of neutron-rich. The three-body force contribution results in a significant reduction of the proton and kaon fractions in the kaon condensed phase and makes the condensed neutron star matter to be more symmetric in neutrons and protons as compared with the results without including the three-body force. Our results are also compared with other theoretical predictions and discussed in connection with the possible implications for the study of neutron star structure.
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ZUO Wei, LI Ang, CHEN Ji-Yan and LI Zeng-Hua. Kaon Condensation in Neutron Star Matter and Nuclear Three-Body Force Effect[J]. Chinese Physics C, 2005, 29(7): 632-638.
ZUO Wei, LI Ang, CHEN Ji-Yan and LI Zeng-Hua. Kaon Condensation in Neutron Star Matter and Nuclear Three-Body Force Effect[J]. Chinese Physics C, 2005, 29(7): 632-638. shu
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Received: 2004-12-21
Revised: 1900-01-01
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Kaon Condensation in Neutron Star Matter and Nuclear Three-Body Force Effect

    Corresponding author: ZUO Wei,
  • Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China2 School of Physics and Technology,Lanzhou University,Lanzhou 730000,China3 Graduate School of Chinese Academy of Sciences,Beijing 100049,China4 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator Lanzhou 730000,China
  • Received Date: 2004-12-21
  • Accepted Date: 1900-01-01
  • Available Online: 2005-07-05

Abstract: Within the framework of the Brueckner-Hartree-Fock approach, the effects of a microscopic nuclear three-body force on the critical density for kaon condensation in neutron star matter and on the composition of the kaon condensed phase have been investigated. The nuclear three-body force turns out to affect considerably both the critical density for kaon condensation and the composition of the kaon condensed phase in neutron stars via its strongly effect on the high-density behavior of nuclear symmetry energy. It is shown that inclusion of the three-body force contribution in the symmetry energy leads to a reduction of the critical density for kaon condensation and the three-body force effect on the critical density decreases as the proton strangeness content increases. The kaon condensed phase of neutron star matter turns out to be proton-rich instead of neutron-rich. The three-body force contribution results in a significant reduction of the proton and kaon fractions in the kaon condensed phase and makes the condensed neutron star matter to be more symmetric in neutrons and protons as compared with the results without including the three-body force. Our results are also compared with other theoretical predictions and discussed in connection with the possible implications for the study of neutron star structure.

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