Influence of the nuclear equation of state on the hadron-quark phase transition in neutron stars

YANG Fang; SHEN Hong

doi:10.1088/1674-1137/32/7/005

Chinese Physics C> 2008, Vol. 32> Issue(7) : 536-542 DOI: 10.1088/1674-1137/32/7/005

Influence of the nuclear equation of state on the hadron-quark phase transition in neutron stars

YANG Fang ^, ,
SHEN Hong

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Abstract：
We study the hadron-quark phase transition in the interior of neutron stars, and examine the influence of the nuclear equation of state on the phase transition and neutron star properties. The relativistic mean field theory with several parameter sets is used to construct the nuclear equation of state, while the
Nambu-Jona-Lasinio model is used for the description of the deconfined quark phase. Our results show that a harder nuclear equation of state leads to an earlier onset of a mixed phase of hadronic and quark matter. We find that a massive neutron star possesses a mixed phase core, but it is not dense enough to possess a pure quark core.

References

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YANG Fang and SHEN Hong. Influence of the nuclear equation of state on the hadron-quark phase transition in neutron stars[J]. Chinese Physics C, 2008, 32(7): 536-542. doi: 10.1088/1674-1137/32/7/005

YANG Fang and SHEN Hong. Influence of the nuclear equation of state on the hadron-quark phase transition in neutron stars[J]. Chinese Physics C, 2008, 32(7): 536-542. doi: 10.1088/1674-1137/32/7/005 shu

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Received: 2007-09-10
Revised: 2007-10-08

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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 the nuclear equation of state on the hadron-quark phase transition in neutron stars

Corresponding author: YANG Fang,

Received Date: 2007-09-10

Accepted Date: 2007-10-08

Available Online: 2008-07-05

Abstract:

We study the hadron-quark phase transition in the interior of neutron stars, and examine the influence of the nuclear equation of state on the phase transition and neutron star properties. The relativistic mean field theory with several parameter sets is used to construct the nuclear equation of state, while the
Nambu-Jona-Lasinio model is used for the description of the deconfined quark phase. Our results show that a harder nuclear equation of state leads to an earlier onset of a mixed phase of hadronic and quark matter. We find that a massive neutron star possesses a mixed phase core, but it is not dense enough to possess a pure quark core.

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Influence of the nuclear equation of state on the hadron-quark phase transition in neutron stars

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