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arXiv 2207.05063gr-qchep-th
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基本长度尺度与光在引力场中的弯曲

Fundamental length scale and the bending of light in a gravitational field

Philip Tee, Nosratollah Jafari

摘要:

量子化量子引力的正则方法被理解为患有病理性的不可重可化性。然而,在有效场论的背景下,一个可行的微扰方法来计算基本过程是可能的。一些非微扰方法,最著名的是圈量子引力和组合量子引力,暗示了最小长度的存在。为了避免最小长度的存在与狭义相对论原理之间的矛盾,双狭义相对论引入了修正的色散关系来调和冲突。在这项工作中,我们结合这些色散关系与有效场论的方法来计算第一后牛顿修正光弯曲的大质量物体。计算提供了一个直接测量的效果,依赖于量子化的引力场的存在和最小长度的前景。实验验证将提供引力量子理论存在的证据,以及时空在最小距离上的基本量子化。

英文摘要:

The canonical approach to quantizing quantum gravity is understood to suffer from pathological non-renomalizability. Nevertheless in the context of effective field theory, a viable perturbative approach to calculating elementary processes is possible. Some non-perturbative approaches, most notably loop quantum gravity and combinatorial quantum gravity imply the existence of a minimal length. To circumvent the seeming contradiction between the existence of a minimum length and the principle of special relativity, Double Special Relativity introduces modified dispersion relationships that reconcile the conflict. In this work, we combine these dispersion relationships with an effective field theory approach to compute the first post Newtonian correction to the bending of light by a massive object. The calculation offers the prospect of a directly measurable effect that rests upon both the existence of a quantized gravitational field and a minimal length. Experimental verification would provide evidence of the existence of a quantum theory of gravity, and the fundamental quantization of spacetime with a bound on the minimal distance.

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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