Neutron stars in Gauss-Bonnet extended Starobinsky gravity

被引：0
作者：
Liu, Zhonghai [1 ]
Li, Ziyi [1 ]
Liang, Liang [2 ,3 ]
Li, Shoulong [1 ]
Yu, Hongwei [1 ]
机构：
[1] Hunan Normal Univ, Synerget Innovat Ctr Quantum Effect & Applicat, Dept Phys, Changsha 410081, Peoples R China
[2] Hunan Normal Univ, Inst Interdisciplinary Studies, Changsha 410081, Peoples R China
[3] Hunan Normal Univ, Shuda Coll, Changsha 410017, Peoples R China
来源：
PHYSICAL REVIEW D | 2024年 / 110卷 / 12期
基金：
中国国家自然科学基金;
关键词：
ROTATING RELATIVISTIC STARS; EQUATIONS; MODELS; STATE;
D O I：
10.1103/PhysRevD.110.124052
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Recently, a class of Gauss-Bonnet extended Starobinsky gravity was proposed, allowing black holes to carry ghost-free massive scalar hair for the first time without requiring additional matter fields. This intriguing feature offers a new perspective for understanding higher-curvature pure gravity and highlights the importance of further studying the potential effects of Gauss-Bonnet extensions in gravitational systems beyond black holes. In this study, we investigate the properties of neutron stars within this model, focusing on how the higher-curvature terms, particularly the coupling between the Gauss-Bonnet term and the curvature-squared term, impact the stellar structure. We present a detailed analysis of these effects and compute the moment of inertia for rotating neutron stars under the slow-rotation approximation. The substantial differences in the moment of inertia between general relativity and Gauss-Bonnet extended Starobinsky gravity are expected to be detectable through future high-precision observations.
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页数：15
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