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arXiv 0711.0673gr-qcastro-ph
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更多关于光的弯曲!

More on the bending of light !

Kayll Lake

摘要:

最近,林德勒和伊沙克认为,光的弯曲,在原则上,改变了宇宙学常数的存在,因为人们必须考虑不仅是零测地线方程,但也测量的过程。我同意两者都必须考虑的事实。在这里,在数学上的精确解的经典弯曲问题的基础上,独立的宇宙学常数,我澄清的近似参数中发现的绝大多数文本(新的和旧的)的测量值的弯曲光为一个单一的来源,并表明,结果部分是由于几乎完美的取消两个条款,其中之一是很少考虑。当考虑两个源时,这种抵消是没有后果的,并且,例如,如果源是相反的,具有相同的相关联的拱点距离,近似参数给出了严格正确的答案(直到数值评估),一个不受宇宙学常数存在的答案。

英文摘要:

Recently, Rindler and Ishak have argued that the bending of light is, in principle, changed by the presence of a cosmological constant since one must consider not only the null geodesic equation, but also the process of measurement. I agree with the fact that both must be considered. Here, on the basis of the mathematically exact solution to the classical bending problem, and independent of the cosmological constant, I clarify the approximate argument found in the vast majority of texts (new and old) for the measured value of the bending of light for a single source and show that the result is in part due to the almost perfect cancelation of two terms, one of which is seldom considered. When one considers two sources, this cancelation is of no consequence, and, for example, if the sources are opposite with the same associated apsidal distance, the approximate argument gives the rigorously correct answer (up to numerical evaluation), an answer which is unaffected by the presence of a cosmological constant.

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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