LI Hua1, LUO Xin-Lian2, JIANG Yu1, ZONG Hong-Shi1,3**
1Department of Physics, Nanjing University, Nanjing 210093 2Department of Astronomy, Nanjing University, Nanjing 210093 3Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093
The Renormalized Equation of State and Quark Star
LI Hua1, LUO Xin-Lian2, JIANG Yu1, ZONG Hong-Shi1,3**
1Department of Physics, Nanjing University, Nanjing 210093 2Department of Astronomy, Nanjing University, Nanjing 210093 3Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093
摘要By means of the EOS of QCD at zero temperature and finite quark chemical potential we proposed [Phys. Rev. D 78 (2008) 054001] in the framework of rainbow-ladder approximation of Dyson–Schwinger approach, we investigate the structure of quark star and its property. It is found that the mass-radius relation in our model is very different from that of usual quark star models, but similar to neutron star models. The obtained mass of quark star is about 1.75Mʘ ∼ 2.2Mʘ. The obtained radius of quark star is 22∼26 km, which is obviously larger than the results in other models. The reason for this discrepancy is analyzed.
Abstract：By means of the EOS of QCD at zero temperature and finite quark chemical potential we proposed [Phys. Rev. D 78 (2008) 054001] in the framework of rainbow-ladder approximation of Dyson–Schwinger approach, we investigate the structure of quark star and its property. It is found that the mass-radius relation in our model is very different from that of usual quark star models, but similar to neutron star models. The obtained mass of quark star is about 1.75Mʘ ∼ 2.2Mʘ. The obtained radius of quark star is 22∼26 km, which is obviously larger than the results in other models. The reason for this discrepancy is analyzed.
LI Hua;LUO Xin-Lian;JIANG Yu;ZONG Hong-Shi;**. The Renormalized Equation of State and Quark Star[J]. 中国物理快报, 2010, 27(12): 121202-121202.
LI Hua, LUO Xin-Lian, JIANG Yu, ZONG Hong-Shi, **. The Renormalized Equation of State and Quark Star. Chin. Phys. Lett., 2010, 27(12): 121202-121202.
[1] Witten E 1984 Phys. Rev. D 30 272
[2] Farhi E and Jaffe R L 1984 Phys. Rev. D 30 2379
[3] Alcock C et al 1986 Astrophys. J. 310 261
[4] Haensel P et al 1986 Astron. Astrophys. 160 121
[5] Hanauske M et al 2001 Phys. Rev. D 64 043005
[6] Glendenning N K and Kettner C 2000 Astron. Astrophys. 353 L9
[7] Dey M, Bombaci I et al 1998 Phys. Lett. B 438 123.
[8] Prakash M, Baron E and Prakash M 1990 Phys. Lett. B 243 175
[9] Steiner A, Prakash M and Lattimer J M 2000 Phys. Lett. B 486 239
[10] Glendenning N K 2000 Compact Stars: Nuclear Physics, Particle Physics, and General Relativity (New York: Springer)
[11] Alford M and Reddy S 2003 Phys. Rev. D 67 074024
[12] Rehberg P, Klevansky S P and Hüfner J 1996 Phys. Rev. C 53 410
[13] Rüster S B and Rischke D H 2004 Phys. Rev. D 69 045011
[14] Fraga E S et al 2001 Phys. Rev. D 63 121702
[15] Zdunik J L 2000 Astron. Astrophys. 359 311
[16] Harko T and Cheng K S 2002 Astron. Astrophys. 385 947
[17] Zong H S and Sun W M 2008 Phys. Rev. D 78 054001
[18] Roberts C D and Williams A G 1994 Prog. Part. Nucl. Phys. 33 477
[19] Roberts C D and Schmidt S M 2000 Prog. Part. Nucl. Phys. 45 S1 1
[20] Maris P and Roberts C D 2003 Int. J. Mod. Phys. E 12 297
[21] Alkofer R and Smekal L Von 2001 Phys. Rep. 353 281
[22] Zong H S et al 2005 Phys. Rev. C 71 015205
[23] Hou F Y et al 2005 Phys. Rev. C 72 034901
[24] Alkofer R et al 2004 Phys. Rev. D 70 014014
[25] Halasz M A et al 1998 Phys. Rev. D 58 096007
[26] Blaschke D et al 1999 Phys. Lett. B 450 207
[27] Peshier A, Kämpfer B and Soff G 2000 Phys. Rev. C 61 045203
[28] Schertler K, Greiner C, Schaffner-Bielich J and Thoma M H 2000 Nucl. Phys. A 677 463
[29] Özel F 2006 Nature 441 1115
[30] Alford M and Braby M 2005 Astrophys. J. 629 969
[31] Lattimer J M and Prakash M 2001 Astrophys. J. 550 426
[32] Bublla M et al 2004 Phys. Lett. B 595 36
2010, Vol. 27 
