Influence of coupling constants on nuclear symmetry energy

LIU Bei-Bei; OUYANG Fei; CHEN Wei

doi:10.1088/1674-1137/37/4/044103

Chinese Physics C> 2013, Vol. 37> Issue(4) : 044103 DOI: 10.1088/1674-1137/37/4/044103

Influence of coupling constants on nuclear symmetry energy

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By studying the energy of neutron star matter, we discuss the nuclear symmetry energy at different baryon densities and different coupling constants in the relativistic mean field approximation. The results show that the symmetry energy increases with baryon density at various coupling constants and incompressibilities. Furthermore, the symmetry energy at saturation density increases with increasing incompressibility at fixed d, and decreases at fixed c. Specifically, when coupling constants g_v and g_s are fixed, respectively, the symmetry energy has a little change with increasing incompressibility. It is demonstrated that the NN coupling constants have greater influences on the symmetry energy than the self-coupling constants.

References

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LIU Bei-Bei, OUYANG Fei and CHEN Wei. Influence of coupling constants on nuclear symmetry energy[J]. Chinese Physics C, 2013, 37(4): 044103. doi: 10.1088/1674-1137/37/4/044103

LIU Bei-Bei, OUYANG Fei and CHEN Wei. Influence of coupling constants on nuclear symmetry energy[J]. Chinese Physics C, 2013, 37(4): 044103. doi: 10.1088/1674-1137/37/4/044103 shu

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Received: 2012-05-22
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Influence of coupling constants on nuclear symmetry energy

Corresponding author: LIU Bei-Bei,

Corresponding author: CHEN Wei,

Received Date: 2012-05-22

Accepted Date: 1900-01-01

Available Online: 2013-04-05

Abstract: By studying the energy of neutron star matter, we discuss the nuclear symmetry energy at different baryon densities and different coupling constants in the relativistic mean field approximation. The results show that the symmetry energy increases with baryon density at various coupling constants and incompressibilities. Furthermore, the symmetry energy at saturation density increases with increasing incompressibility at fixed d, and decreases at fixed c. Specifically, when coupling constants g_v and g_s are fixed, respectively, the symmetry energy has a little change with increasing incompressibility. It is demonstrated that the NN coupling constants have greater influences on the symmetry energy than the self-coupling constants.

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Influence of coupling constants on nuclear symmetry energy

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