Influence of Hyperon Coupling Constant on the Properties of Hybrid Stars

Bao Temurbagan; LIU Guang-Zhou; ZHU Ming-Feng; LIU Wei

Chinese Physics C> 2006, Vol. 30> Issue(10) : 961-965

Influence of Hyperon Coupling Constant on the Properties of Hybrid Stars

College of Physics, Jilin University, Changchun 130023, China2 College of Physics, Inner Mongolia University for Nationalities, Tongliao 028043, China

Abstract
HTML
Reference
Related

PDF

Abstract：
In terms of the relativistic mean field theory, which describes the hadronic matter, and the NJL model, which characterizes the quark matter, the influence of hyperon coupling constant on the properties of hybrid stars is studied. The numerical results show that with the increase of the hyperon coupling constant the phase transition density decreases, the equation of state in the mixed phase range stiffens, and the maximum mass and the corresponding radius increase. When the hyperon coupling constant increases from 0.73 to 1, the maximum mass of the star increases from 1.68_⊙ to 1.82M_⊙ and the corresponding radius of the star changes from 11.4km to 12.5km. The result also shows that the different hadronic equations of state have different influence on the properties hybrid stars. This model is suitable for describing the hybrid stars with big masses and small quark cores.

References

[1]

. Schaffner J, Mishustin I N. Phys. Rev., 1996, C53: 14162. Burgio G F, Baldo M, Sahu P K et al. Phys. Rev., 2002, C66: 0258023. Glendenning N K. APJ, 1985, 293: 2704. Glendenning N K. Phys. Rev., 1992, D46: 12745. Schertler K, Greiner C et al. Nucl. Phys., 2000, A677: 4636. Schertler K, Greiner C, Sahu P K et al. Nucl. Phys., 1998, A637: 4517. Glendenning N K. Compact Stars. Springer-Verlag, 1997.3038. Bao Tmurbagan, LIU Guang-Zhou, ZHU Ming-Feng. Com-munication in Ther. Phys., 2006, 45(3): 505-5109. Namb Y, Jona-Lasinio G. Phys. Rev., 1961, 122: 345; 1961, 124: 24610. Buballa M, Oertel M. hep-ph/981052911. Schertler K, Leupold S. Phys. Rev., 1999, C60: 02580112. Glendenning N K, Moszkowski S A. Phys. Rev. Lett., 1991, 67: 241413. Oppenheimer J R, Volko G M. Phys. Rev., 1939, 55: 34714. Bao Temurbagan, Doctor Thesis, Univ. of Jilin, 2005(in Chinese)(包特木尔巴根. 吉林大学博十学位论文, 2005)15. Van KerkwijkMH, Van Paradijs J, Zuiderwijk E J. Astron.Astrophys., 1995, 303: 49716. Orosz J A, Kuulkers E. Mon. Not. R. Astro. Soc., 1999, 305: 132

[1]	LI Yuan , SHAO Feng-Lan . Decay Contributions to Hyperon Polarization in High Energy Reactions. Chinese Physics C, 2007, 31(9): 810-814.
[2]	HU Jun-Hui , WENG Yao , HU Hai-Ming , YANG Yong-Xu , GAO Yuan-Ning , WANG Jun . Measurement of Strong Coupling Constant at Low Energy Range. Chinese Physics C, 2007, 31(6): 518-522.
[3]	ZUO Wei , LI Ang , LUO Pei-Yan , YONG Gao-Chan . Properties of Proto-Neutron Star and Effect of Three-Body Forces. Chinese Physics C, 2006, 30(10): 956-960.
[4]	Bao Tmurbagan , LIU Guang-Zhou , ZHU Ming-Feng . Mass-Density-Dependent Quark Model with Thermodynamic Self-consistency and Hybrid Stars. Chinese Physics C, 2006, 30(S2): 255-257.
[5]	CHEN Wei . Thermal Property of Protoneutron Star Matter. Chinese Physics C, 2006, 30(2): 118-122.
[6]	ZHU Zhao-Huan , BAN Shu-Fang , LI Jun , MENG Jie . Pesponse of the Neutron Star Properties to the Equation of State at Low Density. Chinese Physics C, 2005, 29(6): 565-569.
[7]	LI Zeng-Hua , LU Guang-Cheng , ZUO Wei . Properties of Isospin Asymmetric Nuclear Matter and Extended BHF Approach (Ⅶ) Proton and Neutron ¹S₀ Superfluidity in Neutron Star Matter. Chinese Physics C, 2003, 27(12): 1084-1088.
[8]	ZHANG Shi-Sheng , MENG Jie , GUO Jian-You . Method of the Analytical Continuation of the Coupling Constant in Schrodinger Equations. Chinese Physics C, 2003, 27(12): 1095-1099.
[9]	LIU Bo , GUO Hua . In-Medium Effects on Neutron Stars. Chinese Physics C, 2003, 27(8): 683-687.
[10]	JIA Huan-Yu , MENG Jie , ZHAO En-Guang , LI Jun , SANG Jian-Ping . Effect of Temperature on Hyperon Neutron Star. Chinese Physics C, 2003, 27(3): 200-205.
[11]	JIA Huan-Yu , LV Hong-Feng , MENG Jie . Hyperon rms Radii of _Λ²⁰⁸Pb and Neutron Star Structure. Chinese Physics C, 2002, 26(10): 1050-1055.
[12]	LIU ChunXiu , HE ZhenMin , DUAN ChunGui , PENG HongAn . Non-constancy and the Effect of Nuclear Environment of K-Factors in p-N(A) Drell-Yan Process. Chinese Physics C, 2000, 24(2): 131-139.
[13]	YANG Min , CHEN GuoMing , YANG HaiJun , XIONG ZhaoHua , LU YuSheng , CHEN HeSheng . Measurement of the Cross-Section of Single W Boson Production and the Anomalous Couplings on L3 Experiment. Chinese Physics C, 2000, 24(12): 1073-1080.
[14]	Xing Zheng , Wang Zixing , Chen Xingqu , Xu Jinzhang . Influence of Configuration Admixtures on Superdeformed Triaxial Bands. Chinese Physics C, 1998, 22(11): 1029-1034.
[15]	Cheng Zitao , Dong Yubing , Liu Xianhui . The Effect of High Configuration Space Mixing on N,Δ Spectra. Chinese Physics C, 1996, 20(7): 658-662.
[16]	Xing Zheng , Wang Yangli , Chen Xingqu . A Simple Two-Band Mixing Model of Superdeformed Bands. Chinese Physics C, 1994, 18(1): 62-67.
[17]	GAO Song , LI Jia-Rong . Coupling Constant in High Temperature QCD and Deconfinement Phase Transition. Chinese Physics C, 1991, 15(2): 117-122.
[18]	GAO YUAN-YI . TO ANALYSE THE PROPERTY SUPERBAND BY USING 2Δ. Chinese Physics C, 1981, 5(4): 508-512.
[19]	Shen Jian-ping , Zhang Zong-ye . THE EFFECTS INDUCED BY A Λ HYPERON ON THE PAIRING CORRELATION IN NUCLEUS. Chinese Physics C, 1980, 4(1): 43-48.
[20]	SHEN QI-XING , HUANG TAO . THE PSEUDOSCALAR GLUON AND THE HADRON STRUCTURE. Chinese Physics C, 1979, 3(3): 277-284.

Access

Get Citation

Bao Temurbagan, LIU Guang-Zhou, ZHU Ming-Feng and LIU Wei. Influence of Hyperon Coupling Constant on the Properties of Hybrid Stars[J]. Chinese Physics C, 2006, 30(10): 961-965.

Bao Temurbagan, LIU Guang-Zhou, ZHU Ming-Feng and LIU Wei. Influence of Hyperon Coupling Constant on the Properties of Hybrid Stars[J]. Chinese Physics C, 2006, 30(10): 961-965. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2006-01-19
Revised: 2006-02-08

Article Metric

Article Views(2992)
PDF Downloads(630)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Influence of Hyperon Coupling Constant on the Properties of Hybrid Stars

Corresponding author: LIU Guang-Zhou,

College of Physics, Jilin University, Changchun 130023, China2 College of Physics, Inner Mongolia University for Nationalities, Tongliao 028043, China

Received Date: 2006-01-19

Accepted Date: 2006-02-08

Available Online: 2006-10-05

Abstract: In terms of the relativistic mean field theory, which describes the hadronic matter, and the NJL model, which characterizes the quark matter, the influence of hyperon coupling constant on the properties of hybrid stars is studied. The numerical results show that with the increase of the hyperon coupling constant the phase transition density decreases, the equation of state in the mixed phase range stiffens, and the maximum mass and the corresponding radius increase. When the hyperon coupling constant increases from 0.73 to 1, the maximum mass of the star increases from 1.68_⊙ to 1.82M_⊙ and the corresponding radius of the star changes from 11.4km to 12.5km. The result also shows that the different hadronic equations of state have different influence on the properties hybrid stars. This model is suitable for describing the hybrid stars with big masses and small quark cores.

HTML

Reference (1)

Influence of Hyperon Coupling Constant on the Properties of Hybrid Stars

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article