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arXiv 1111.5961gr-qcastro-ph.CO
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大质量引力场的球对称解和Galerkin的约束

Spherically Symmetric Solutions in Massive Gravity and Constraints from Galaxies

Stefan Sjors, Edvard Mortsell

摘要:

本文导出了在质量重力不耦合极限下描述静态源和球对称源的解析解。我们分析了模型的参数范围,并指定当Vainshtein机制是可能的。此外,我们使用星系的引力透镜和速度色散数据来限制引力子的质量尺度。在95%的置信水平下,以哈勃半径r_H=c/H_0为单位,计算得到的反引力子质量标度λ_g = h/(2 pi)/(cm_g)的量级为λ_g/r_H > 0.01-0.02。

英文摘要:

In this paper, analytical solutions describing static and spherically symmetric sources in the decoupling limit of massive gravity are derived. We analyze the model parameter range and specify when a Vainshtein mechanism is possible. Furthermore, we use gravitational lensing and velocity dispersion data from galaxies to put constraints on the mass scale of the graviton. The result for the inverse graviton mass scale lambda_g = h/(2pi)/(c m_g), in units of the Hubble radius r_H=c/H_0, is of the order lambda_g/r_H > 0.01-0.02 at 95% confidence level.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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