One-gluon-exchange effect on the properties of quark matter and strange stars

  • We present a modified version of quark mass scaling via considering the important one-gluon-exchange interaction between quarks in the quark mass density-dependent model. The properties of strange quark matter and the structure of strange stars are then studied with the new scaling and a self-consistent thermodynamic treatment. It is found that the one-gluon-exchange effect lowers the system energy considerably, makes the equation of state stiffer, and the sound velocity tends to the ultra-relativistic value faster, which make the biggest value of the maximum mass of strange stars become as big as approximately 2 times the solar mass, in accordance with the latest astronomical observations.
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CHEN Shi-Wu, GAO Li and PENG Guang-Xiong. One-gluon-exchange effect on the properties of quark matter and strange stars[J]. Chinese Physics C, 2012, 36(10): 947-953. doi: 10.1088/1674-1137/36/10/005
CHEN Shi-Wu, GAO Li and PENG Guang-Xiong. One-gluon-exchange effect on the properties of quark matter and strange stars[J]. Chinese Physics C, 2012, 36(10): 947-953.  doi: 10.1088/1674-1137/36/10/005 shu
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Received: 2012-02-24
Revised: 1900-01-01
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One-gluon-exchange effect on the properties of quark matter and strange stars

Abstract: We present a modified version of quark mass scaling via considering the important one-gluon-exchange interaction between quarks in the quark mass density-dependent model. The properties of strange quark matter and the structure of strange stars are then studied with the new scaling and a self-consistent thermodynamic treatment. It is found that the one-gluon-exchange effect lowers the system energy considerably, makes the equation of state stiffer, and the sound velocity tends to the ultra-relativistic value faster, which make the biggest value of the maximum mass of strange stars become as big as approximately 2 times the solar mass, in accordance with the latest astronomical observations.

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