The Buchdahl stability bound in Eddington-inspired Born-Infeld gravity

被引：7

作者：

Feng, Wei-Xiang ^{[1
]}

Geng, Chao-Qiang ^{[2
,3
,4
]}

Luo, Ling-Wei ^{[2
,5
]}

机构：

[1] Univ Calif Riverside, Dept Phys & Astron, Riverside, CA 92521 USA

[2] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan

[3] Natl Ctr Theoret Sci, Phys Div, Hsinchu 300, Taiwan

[4] Hunan Normal Univ, SICQEA, Changsha 410081, Hunan, Peoples R China

[5] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

来源：

CHINESE PHYSICS C | 2019年 / 43卷 / 08期

关键词：

Eddington-inspired Born-Infeld gravity; Buchdahl stability bound; Hagedorn-like equation of state; compact stars;

D O I：

10.1088/1674-1137/43/8/083107

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We give the Buchdahl stability bound in Eddington-inspired Born-Infeld (EiBI) gravity. We show that this bound depends on an energy condition controlled by the model parameter kappa. From this bound, we can constrain kappa less than or similar to 10(8) m(2) if a neutron star with a mass around 3M(circle dot) is observed in the future. In addition, to avoid the potential pathologies in EiBI, a Hagedorn-like equation of state associated with kappa at the center of a compact star is inevitable, which is similar to the Hagedorn temperature in string theory.

引用

页数：7

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