Influence of the weakly interacting light U boson on the properties of massive protoneutron stars

doi:10.1088/1674-1137/40/6/065101

	Influence of the weakly interacting light U boson on the properties of massive protoneutron stars
	Hong, Bin; Jia, Huan-Yu; Mu, Xue-Ling; Zhou, Xia
刊名	CHINESE PHYSICS C
	2016-06-01
卷号	40 页码:39-46
关键词	massive protoneutron star relativistic mean field theory U bosons equation of state
ISSN号	1674-1137
DOI	10.1088/1674-1137/40/6/065101
英文摘要	Considering the octet baryons in relativistic mean field theory and selecting entropy per baryon S=1, we calculate and discuss the influence of U bosons on the equation of state, mass-radius, moment of inertia and gravitational redshift of massive protoneutron stars (PNSs). The effective coupling constant g(U) of U bosons and nucleons is selected from 0 to 70 GeV-2. The results indicate that U bosons will stiffen the equation of state (EOS). The influence of U bosons on the pressure is more obvious at low density than high density, while the influence of U bosons on the energy density is more obvious at high density than low density. The U bosons play a significant role in increasing the maximum mass and radius of PNS. When the value of g(U) changes from 0 to 70 GeV-2, the maximum mass of a massive PNS increases from 2.11M(circle dot) to 2.58M(circle dot) and the radius of a PNS corresponding to PSR J0348+0432 increases from 13.71 km to 24.35 km. The U bosons will increase the moment of inertia and decrease the gravitational redshift of a PNS. For the PNS of the massive PSR J0348+0432, the radius and moment of inertia vary directly with g(U), and the gravitational redshift varies approximately inversely with g(U).
资助项目	National Natural Science Foundation of China[11175147]
WOS关键词	PULSAR PSR J1614-2230 ; NEUTRON-STARS ; HYPERNUCLEI ; POTENTIALS ; LAMBDA
WOS研究方向	Physics
语种	英语
出版者	CHINESE PHYSICAL SOC
WOS记录号	WOS:000377558800006
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/42785]
专题	中国科学院近代物理研究所
通讯作者	Jia, Huan-Yu
作者单位	Southwest Jiaotong Univ, Inst Modern Phys, Chengdu 610031, Peoples R China
推荐引用方式 GB/T 7714	Hong, Bin,Jia, Huan-Yu,Mu, Xue-Ling,et al. Influence of the weakly interacting light U boson on the properties of massive protoneutron stars[J]. CHINESE PHYSICS C,2016,40:39-46.
APA	Hong, Bin,Jia, Huan-Yu,Mu, Xue-Ling,&Zhou, Xia.(2016).Influence of the weakly interacting light U boson on the properties of massive protoneutron stars.CHINESE PHYSICS C,40,39-46.
MLA	Hong, Bin,et al."Influence of the weakly interacting light U boson on the properties of massive protoneutron stars".CHINESE PHYSICS C 40(2016):39-46.