Description of the Nuclear Matter and Neutron Star in Relativistic Mean Field Theory with Density-Dependent Interactions

  • Properties of nuclear matter and neutron star are described in relativistic mean field theory with density-dependent effective interactions. The difference of saturated properties for nuclear matter between different effective interactions is subtle except for NL2 and TM2 which are mainly used for light nucleus. For neutron star matter, the meson field potentials calculated from different effective interactions have short odds at low-density, while the difference becomes large at high-density and increases with density. The equations of state (EOS) of neutron star given by density-dependent effective interactions DD-ME1 and TW-99 are softer than those of the other effective interactions such as NL1,NL3 and NLSH. The maximum masses calculated from different EOS are 2.0—3.0M ⊙, and the corresponding radius are 10—14km.
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LI Jun, BAN Shu-Fang, JIA Huan-Yu, SANG Jian-Ping and MENG Jie. Description of the Nuclear Matter and Neutron Star in Relativistic Mean Field Theory with Density-Dependent Interactions[J]. Chinese Physics C, 2004, 28(2): 140-147.
LI Jun, BAN Shu-Fang, JIA Huan-Yu, SANG Jian-Ping and MENG Jie. Description of the Nuclear Matter and Neutron Star in Relativistic Mean Field Theory with Density-Dependent Interactions[J]. Chinese Physics C, 2004, 28(2): 140-147. shu
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Received: 2003-05-14
Revised: 1900-01-01
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Description of the Nuclear Matter and Neutron Star in Relativistic Mean Field Theory with Density-Dependent Interactions

    Corresponding author: MENG Jie,
  • School of Physics,Peking University,Beijing 100871,China2 College of Physics and Technology,Wuhan University,Wuhan 430072,China3 College of Science,Southwest Jiaotong University,Chengdou 610031,China4 Institute of Theroetical Physics,Chinese Academy of Science,Beijing 100080,China5 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator,Lanzhou 730000,China

Abstract: Properties of nuclear matter and neutron star are described in relativistic mean field theory with density-dependent effective interactions. The difference of saturated properties for nuclear matter between different effective interactions is subtle except for NL2 and TM2 which are mainly used for light nucleus. For neutron star matter, the meson field potentials calculated from different effective interactions have short odds at low-density, while the difference becomes large at high-density and increases with density. The equations of state (EOS) of neutron star given by density-dependent effective interactions DD-ME1 and TW-99 are softer than those of the other effective interactions such as NL1,NL3 and NLSH. The maximum masses calculated from different EOS are 2.0—3.0M ⊙, and the corresponding radius are 10—14km.

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