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Comparison of Properties of the Simplest Neutron Stars in Three RMF Models |
| WANG Guo-Hua1, FU Wei-Jie1 and LIU Yu-Xin1,2 |
| 1Department of Physics and the State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 1008712Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000 |
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WANG Guo-Hua, FU Wei-Jie and LIU Yu-Xin 2008 Chin. Phys. Lett. 25 2837-2840 |
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Abstract We study some properties of the simplest neutron stars (NSs) in the Glendenning–Moszkowski (GM) model, the hybrid derivative coupling (HD) model and the Zimanyi–Moszkowski (ZM) model in the framework of relativistic mean field (RMF) theory with and without the interaction by exchanging the δ-meson. We show that the maximal mass of the NSs becomes smaller, but the redshift becomes larger from the GM model to the HD model, then to the ZM model. The interaction with the δ-meson exchange enlarges the maximal mass of neutron stars, increases the relative population of charged particles (proton, electron and muon) and descends the relative population of neutron.
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| Keywords:
26.60.-c
26.60.Kp
21.30.Fe
97.60.Jd
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Received: 03 April 2008
Published: 25 July 2008
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26.60.-c
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(Nuclear matter aspects of neutron stars)
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26.60.Kp
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(Equations of state of neutron-star matter)
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21.30.Fe
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(Forces in hadronic systems and effective interactions)
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97.60.Jd
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(Neutron stars)
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