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

CHEN Shi-Wu; GAO Li; PENG Guang-Xiong

doi:10.1088/1674-1137/36/10/005

Chinese Physics C> 2012, Vol. 36> Issue(10) : 947-953 DOI: 10.1088/1674-1137/36/10/005

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

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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.

References

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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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沈阳化工大学材料科学与工程学院沈阳 110142

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

Received Date: 2012-02-24

Accepted Date: 1900-01-01

Available Online: 2012-10-05

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

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