Hyperon coupling dependence of hadron matter properties in relativistic mean field model

doi:10.1088/1009-1963/16/11/024

中国物理B ›› 2007, Vol. 16 ›› Issue (11): 3290-3296.doi: 10.1088/1009-1963/16/11/024

Hyperon coupling dependence of hadron matter properties in relativistic mean field model

米爱军, 左维, 李昂

出版日期:2007-11-20 发布日期:2007-11-20
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos 10575119 and 10235030), the Knowledge Innovation Program of Chinese Academy of Sciences (Grant No KJCX2-SW-N02), the State Key Development Program for Basic Research of China

Hyperon coupling dependence of hadron matter properties in relativistic mean field model

Mi Ai-Jun(米爱军)^a)^†, Zuo Wei(左维)^a)b), and Li Ang(李昂)^c)

^aSchool of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China: ^bInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China: ^cSchool of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China

Online:2007-11-20 Published:2007-11-20
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos 10575119 and 10235030), the Knowledge Innovation Program of Chinese Academy of Sciences (Grant No KJCX2-SW-N02), the State Key Development Program for Basic Research of China

摘要/Abstract

Abstract:

The properties of hadronic matter at $\beta$ equilibrium in a wide range of densities are described by appropriate equations of state in the framework of the relativistic mean field model. Strange meson fields, namely the scalar meson field $\sigma$* (975) and the vector meson field $\phi$(1020), are included in the present work. We discuss and compare the results of the equation of state, nucleon effective mass, and strangeness fraction obtained by adopting the TM1, TMA, and GL parameter sets for nuclear sector and three different choices for the hyperon couplings. We find that the parameter set TM1 favours the onset of hyperons most, while at high densities the GL parameter set leads to the most hyperon-rich matter. For a certain parameter set (e.g. TM1), the most hyperon-rich matter is obtained for the hyperon potential model. The influence of the hyperon couplings on the effective mass of nucleon, is much weaker than that on the nucleon parameter set. The nonstrange mesons dominate essentially the global properties of dense hyperon matter. The hyperon potential model predicts the lowest value of the neutron star maximum mass of about 1.45 M_sun to be 0.4-0.5 M_sun lower than the prediction by using the other choices for hyperon couplings.

Key words: hyperon coupling, strange meson field, equations of state

中图分类号: (Nuclear matter)

21.65.-f

21.10.Dr (Binding energies and masses) 21.60.Jz (Nuclear Density Functional Theory and extensions (includes Hartree-Fock and random-phase approximations)) 26.60.-c (Nuclear matter aspects of neutron stars) 97.60.Jd (Neutron stars)

米爱军, 左维, 李昂. Hyperon coupling dependence of hadron matter properties in relativistic mean field model[J]. 中国物理B, 2007, 16(11): 3290-3296.

Mi Ai-Jun(米爱军), Zuo Wei(左维), and Li Ang(李昂). Hyperon coupling dependence of hadron matter properties in relativistic mean field model[J]. Chinese Physics, 2007, 16(11): 3290-3296.

[1]	刘俊超, 袁志红, 李世长, 孔祥刚, 虞游, 马生贵, 桑革, 高涛. Structural, electronic, vibrational, and thermodynamic properties of Zr_1-xHf_xCo: A first-principles-based study[J]. 中国物理B, 2018, 27(4): 47802-047802.
[2]	张东海, 李惠玲. Evidence of self-affine multiplicity fluctuation of particle production in ⁸⁴Kr--emulsion interactions at 1.7 A GeV[J]. 中国物理B, 2009, 18(2): 522-530.
[3]	张东海, 程锦霞, 成宾, 王芳, 王琦, 张海青, 许蓉, 贾会明, 李雪琴. Helium production from ⁸⁴Kr-- and ¹⁹⁷Au--emulsion interactions at high energies[J]. 中国物理B, 2009, 18(2): 531-536.
[4]	崔常喜, 左维, H. J. Schulze. ³PF₂ neutron superfluidity in neutron stars and three-body force effect[J]. 中国物理B, 2008, 17(9): 3289-3293.
[5]	刘福虎. Anisotropic emission of charged mesons and structure characteristic of emission source in heavy ion collisions at 1--2A GeV[J]. 中国物理B, 2008, 17(3): 883-895.
[6]	赖祥军, 刘门全, 刘晶晶, 罗志全. The mass effect of the quark phase transition in supernova core[J]. 中国物理B, 2008, 17(2): 585-591.
[7]	颜廷志, 马余刚, 蔡翔舟, 方德清, 郭威, 马春旺, 沈文庆, 田文栋, 王鲲. Scaling of anisotropic flows and nuclear equation of state in intermediate energy heavy ion collisions[J]. 中国物理B, 2007, 16(9): 2676-2682.
[8]	张东海, 赵惠华, 刘芳, 何春乐, 贾会明, 李雪琴, 李振宇, 李俊生. Intermittency in 3.7 A GeV ¹⁶O-emulsion interactions[J]. 中国物理B, 2007, 16(9): 2689-2700.
[9]	李昂, 左维, 米爱军, BurgioG. Hyperon--hyperon interaction in relativistic mean field model[J]. 中国物理B, 2007, 16(7): 1934-1940.
[10]	张进富, 吕立君, 白洪波. Critical behaviour in nuclear structure from spherical to axially symmetric deformed shape in IBM[J]. 中国物理B, 2007, 16(7): 1941-1946.
[11]	张东海, 刘芳, 何春乐, 赵惠华, 贾会明, 李雪琴, 李振宇, 李俊生. Features of the total disintegration events of heavyemulsion targets caused by 4.5A GeV/c¹⁶O[J]. 中国物理B, 2006, 15(11): 2564-2570.
[12]	刘建业, 郭文军, 任中洲, 邢永忠, 左　维, 李希国. Isospin- and momentum-dependent interaction in isospin-dependent quantum molecular dynamics[J]. 中国物理B, 2006, 15(8): 1738-1745.
[13]	雍高产, 李宝安, 左维. Several observables sensitive to the symmetry energy in heavy-ion collisions induced by high energy radioactive beams[J]. 中国物理B, 2005, 14(8): 1549-1553.
[14]	李增花, 左维, 陆广成. Effect of three-body interaction on hot asymmetric nuclear matter[J]. 中国物理B, 2004, 13(11): 1848-1853.
[15]	郭华, 杨树, 胡翔, 刘玉鑫. MULTI-LAMBDA MATTER IN A CHIRAL HADRONIC MODEL[J]. 中国物理B, 2001, 10(9): 805-808.

Hyperon coupling dependence of hadron matter properties in relativistic mean field model

Hyperon coupling dependence of hadron matter properties in relativistic mean field model

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics

本文评价

推荐阅读 0