Properties of quark matter in a new quasiparticle model with QCD running coupling

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SCIENCE CHINA Physics, Mechanics & Astronomy, Volume 59, Issue 6: 662001(2016) https://doi.org/10.1007/s11433-015-0524-2

Properties of quark matter in a new quasiparticle model with QCD running coupling

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  • ReceivedDec 24, 2015
  • AcceptedFeb 25, 2016
  • PublishedApr 8, 2016
PACS numbers

Abstract

The running of the QCD coupling in the effective mass causes thermodynamic inconsistency problem in the conventional quasiparticle model. We provide a novel treatment which removes the inconsistency by an effective bag constant. The chemical potential dependence of the renormalization subtraction point is constrained by the Cauchy condition in the chemical potential space. The stability and microscopic properties of strange quark matter are then studied within the completely self-consistent quasiparticle model, and the obtained equation of state of quark matter is applied to the investigation of strange stars. It is found that our improved model can describe well compact stars with mass about two times the solar mass, which indicates that such massive compact stars could be strange stars.


Funded by

National Natural Science Foundation of China(11575190)

National Natural Science Foundation of China(11135011)

National Natural Science Foundation of China(11475110)


Acknowledgment

Acknowledgments

This work was supported by the National Natural Science Foundation of China (Grant Nos. 11135011, 11475110 and 11575190).


References

[1] Kraemmer U., Rebhan A.. Rep. Prog. Phys., 2004, 67: 351 Google Scholar

[2] Xu J. F., Peng G. X., Liu F., Hou D. F., Chen L. W.. Phys. Rev. D, 2015, 92: 025025 Google Scholar

[3] Kurkela A., Romatschke P., Vuorinen A.. Phys. Rev. D, 2010, 81: 105021 Google Scholar

[4] Franzon B., Fogaca D. A., Navarra F. S., Horvath J. E.. AIP Conf. Proc., 2013, 1520: 382 Google Scholar

[5] Demorest P. B., Pennucci T., Ransom S. M., Roberts M. S. E., Hessels J. W. T.. Nature, 2010, 467: 1081 Google Scholar

[6] Witten E.. Phys. Rev. D, 1984, 30: 272 Google Scholar

[7] Fahri E., Jaffe R. L.. Phys. Rev. D, 1984, 30: 2379 Google Scholar

[8] Alcock C., Farhi E., Olinto A.. Phys. Rev. Lett., 1986, 57: 2088 Google Scholar

[9] Alford M., Blaschke D., Drago A., Klhn T., Pagliara G., Schaffner-Bielich J.. Nature, 2007, 445: E7 Google Scholar

[10] Perez-Garcia M. A., Silk J., Stone J. R.. Phys. Rev. Lett., 2010, 105: 141101 Google Scholar

[11] Weber F., Orsaria M., Rodrigues H., Yang S. H.. Proc. Int. Astron. Union, 2012, 8: 61 Google Scholar

[12] Madsen J.. J. Phys. G-Nucl. Part. Phys., 2005, 31: S833 Google Scholar

[13] Bombaci I.. Phys. Rev. C, 1997, 55: 1587 Google Scholar

[14] Pérez-Garcia M. á., Silk J., Pen U. L.. Phys. Lett. B, 2013, 727: 357 Google Scholar

[15] Cao G. Q., He L. Y., Zhuang P. F.. Phys. Rev. D, 2015, 91: 114021 Google Scholar

[16] Isayev A. A.. Phys. Rev. C, 2015, 91: 015208 Google Scholar

[17] Zhao T., Yan Y., Luo X. L., Zong H. S.. Phys. Rev. D, 2015, 91: 034018 Google Scholar

[18] Wu C., Xu R. L.. Eur. Phys. J. A, 2015, 51: 124 Google Scholar

[19] Xia C. J., Chen S. W., Peng G. X.. Sci. China-Phys. Mech. Astron., 2014, 57: 1304 Google Scholar

[20] F. Weber, Prog. Part. Nucl. Phys. {\bf 54}, 193 (2005); F. Yang, and H. Shen, Phys. Rev. C {\bf 77}, 025801 (2008).. Google Scholar

[21] Bordbar G. H., Bahri H., Kayanikhoo F.. Res. Astron. Astrophys., 2012, 12: 1280 Google Scholar

[22] Fowler G. N., Raha S., Weiner R. M.. Z. Phys. C-Part. Fields, 1981, 9: 271 Google Scholar

[23] S. Chakrabarty, S. Raha, and B. Sinha, Phys. Lett. B {\bf 229}, 112 (1989); S. Chakrabarty, Phys. Rev. D {\bf 43}, 627 (1991).. Google Scholar

[24] O. G. Benvenuto, and G. Lugones, Phys. Rev. D {\bf 51}, 1989 (1995); G. Lugones, and O. G. Benvenuto, Phys. Rev. D {\bf 52}, 1276 (1995).. Google Scholar

[25] G. X. Peng, H. C. Chiang, J. J. Yang, L. Li, and B. Liu, Phys. Rev. C {\bf 61}, 5201 (1999); X. J. Wen, X. H. Zhong, G. X. Peng, P. N. Shen, and P. Z. Ning, Phys. Rev. C {\bf 72}, 5204 (2005).. Google Scholar

[26] Y. Zhang, and R. K. Su, Europhys. Lett. {\bf 56}, 361 (2001); Phys. Rev. C {\bf 65}, 035202 (2002); Phys. Rev. C {\bf 77}, 055204 (2008).. Google Scholar

[27] Chen S. W., Gao L., Peng G. X.. Chin. Phys. C, 2012, 36: 947 Google Scholar

[28] Chu P. C., Chen L. W.. Astrophys. J., 2014, 780: 135 Google Scholar

[29] Peng G. X., Lombardo U., Li A.. Phys. Rev. C, 2008, 77: 065807 Google Scholar

[30] Xia C. J., Peng G. X., Chen S. W., Lu Z. Y., Xu J. F.. Phys. Rev. D, 2014, 89: 105027 Google Scholar

[31] Patra B. K., Singh C. P.. Phys. Rev. D, 1996, 54: 3551 Google Scholar

[32] Rischke D. H.. Prog. Part. Nucl. Phys., 2004, 52: 197 Google Scholar

[33] V. M. Bannur, Phys. Rev. C {\bf 75}, 044905 (2007); Int. J. Mod. Phys. A {\bf 28}, 1350006 (2013).. Google Scholar

[34] Srivastava P. K., Tiwari S. K., Singh C. P.. Phys. Rev. D, 2010, 82: 014023 Google Scholar

[35] Peshier A., K?mpfer B., Pavlenko O. P., Soff G.. Phys. Rev. D, 1996, 54: 2399 Google Scholar

[36] Peshier A., K?mpfer B., Soff G.. Phys. Rev. C, 2000, 61: 045203 Google Scholar

[37] Prasad N., Singh C. P.. Phys. Lett. B, 2001, 501: 92 Google Scholar

[38] Tian Y. L., Yan Y., Li H., Luo X. L., Zong H. S.. Phys. Rev. D, 2012, 85: 045009 Google Scholar

[39] Vija H., Thoma M. H.. Phys. Lett. B, 1995, 342: 212 Google Scholar

[40] Manuel C.. Phys. Rev. D, 1996, 53: 5866 Google Scholar

[41] Goloviznin V., Satz H.. Z. Phys. C-Part. Fields, 1993, 57: 671 Google Scholar

[42] Peshier A., K?mpfer B., Pavlenko O., Soff G.. Phys. Lett. B, 1994, 337: 23 Google Scholar

[43] Cleymans J., Ilyin S. V., Smolyansky S. A., Zinovjev G. M.. Z. Phys. C-Part. Fields, 1994, 62: 75 Google Scholar

[44] Letessier J., Rafelski J., Tounsi A.. Phys. Lett. B, 1994, 323: 393 Google Scholar

[45] Gorenstein M. I., Yang S. N.. Phys. Rev. D, 1995, 52: 5206 Google Scholar

[46] Gardim F., Steffens F.. Nucl. Phys. A, 2009, 825: 222 Google Scholar

[47] Peshier A., K?mpfer B., Soff G.. Phys. Rev. D, 2002, 66: 094003 Google Scholar

[48] Schertler K., Greiner C., Thoma M. H.. Nucl. Phys. A, 1997, 616: 659 Google Scholar

[49] Peng G. X.. Phys. Lett. B, 2006, 634: 413 Google Scholar

[50] Wen X. J., Feng Z. Q., Li N., Peng G. X.. J. Phys. G-Nucl. Part. Phys., 2009, 36: 025011 Google Scholar

[51] Lu Z. Y., Peng G. X., Xu J. F.. Acta Astron. Sin., 2015, 56: 34 Google Scholar

[52] Shirkov D. V., Solovtsov I. L.. Phys. Rev. Lett., 1997, 79: 1209 Google Scholar

[53] Li A., Zuo W., Peng G. X.. Phys. Rev. C, 2015, 91: 035803 Google Scholar

[54] Antoniadis J., Freire P. C. C., Wex N., Tauris T. M., Lynch R. S., Kerkwijk M. H. van, Kramer M., Bassa C., Dhillon V. S., Driebe T., Hessels J. W. T., Kaspi V. M., Kondratiev V. I., Langer N., Marsh T. R., McLaughlin M. A., Pennucci T. T., Ransom S. M., Stairs I. H., Leeuwen J. van, Verbiest J. P. W., Whelan D. G.. Science, 2013, 340: 1233232 Google Scholar

[55] Peng G. X., Chiang H. C., Zou B. S., Ning P. Z., Luo S. J.. Phys. Rev. C, 2000, 62: 025801 Google Scholar

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