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arXiv 2602.20261gr-qcastro-ph.HEastro-ph.SR
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对伪牛顿方法检验广义相对论的测试

Tests of general relativity in pseudo-Newtonian approach

Indian Institute of Science(印度科学学院)

Naman Goyal, Banibrata Mukhopadhyay, Ashish Kumar Meena

AI总结:

本文通过伪牛顿方法测试广义相对论经典测试,展示其在强场引力中的应用与局限性。

摘要:

我们研究伪牛顿引力势在不采用完整广义相对论形式化的情况下,能够多大程度上重现广义相对论的经典测试。这对于寻求对相对论引力直观理解的研究人员是有用的。聚焦于水星近日点进动、引力红移和引力光线弯曲,我们推导出轨道进动的解析表达式,并展示,通过合适的物理可接受参数,伪牛顿方法可以准确重现观测到的近日点进动和引力红移。然而,我们确认没有单一势能能一致捕捉所有相对论效应。特别是,虽然某些参数在行星运动和红移方面与广义相对论一致,但它们在较宽的碰撞参数范围内无法重现引力透镜效应。我们的结果突显了伪牛顿方法在建模引力现象中的有用性和局限性。尽管伪牛顿方法不能作为广义相对论的通用替代品,特别是在强场区域,但它提供了有价值的半解析洞察和教学简化。我们的结果表明,伪牛顿方法在可能的广义相对论修改中揭示更复杂的强场引力现象方面是有用的。

英文摘要:

We investigate the extent to which pseudo-Newtonian gravitational potentials can reproduce classic tests of general relativity without resorting to full general relativistic formalisms. This is useful for the researchers seeking intuitive insight into relativistic gravity. Focusing on the perihelion precession of Mercury, gravitational redshift, and gravitational light bending, we derive analytical expressions for orbital precession and demonstrate that, with suitable physically acceptable parameters, pseudo-Newtonian approaches can accurately reproduce the observed perihelion advance and gravitational redshift. However, we confirm that no single potential consistently captures all relativistic effects. In particular, while certain parameters yield agreement with general relativity for planetary motion and redshift, they fail to reproduce gravitational lensing over a broad range of impact parameters. Our results highlight both the usefulness and limitations of pseudo-Newtonian methods in modeling gravitational phenomena. Although the pseudo-Newtonian approach cannot serve as universal substitutes for general relativity, especially in strong-field regimes, it provides valuable semi-analytical insight and pedagogical simplicity. Our results indicate the usefulness of the pseudo-Newtonian approach to uncover more complicated phenomena involved with strong field gravity in possibly modification to general relativity.

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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