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arXiv 1409.4472gr-qcastro-ph.GA
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非局部引力:一般线性近似

Nonlocal Gravity: The General Linear Approximation

B. Mashhoon

摘要:

在广义相对论的框架内,通过引入一个优选标架场,给出了爱因斯坦引力理论的最新经典非定域推广。导出了爱因斯坦场方程的非定域推广。对非局部重力场的线性近似进行了深入的研究,并讨论了相应场方程的解。结果表明,非局域性,具有1千秒差距的特征长度尺度,模拟暗物质的线性制度,同时保持因果关系。本文研究了线性化非局域引力场中光的偏转与引力透镜的关系,特别是研究了均匀运动源的弱引力场中光的传播。简要地提到了天体物理的影响的结果。

英文摘要:

The recent classical nonlocal generalization of Einstein's theory of gravitation is presented within the framework of general relativity via the introduction of a preferred frame field. The nonlocal generalization of Einstein's field equations is derived. The linear approximation of nonlocal gravity (NLG) is thoroughly examined and the solutions of the corresponding field equations are discussed. It is shown that nonlocality, with a characteristic length scale of order 1 kpc, simulates dark matter in the linear regime while preserving causality. Light deflection in linearized nonlocal gravity is studied in connection with gravitational lensing; in particular, the propagation of light in the weak gravitational field of a uniformly moving source is investigated. The astrophysical implications of the results are briefly mentioned.

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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