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arXiv 0812.3521hep-th
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关于IR微扰量子引力的争论

Polemic Notes On IR Perturbative Quantum Gravity

Ilya L. Shapiro

摘要:

量子引力是一个重要而又在很大程度上尚未解决的问题。度量场的量子化有许多不同的方法,包括微扰的和非微扰的。微扰量子引力的现状是以许多不同的模型为特征的,其中一些模型很好地阐述了,但没有一个是完美的,也没有数学上的,也没有现象学上的,主要是因为没有理论推导出的可观测量可以通过实验测量。一个非常有趣的是一个有效的方法,分离的低能量量子效应从紫外部门。用这种方法,人们可以计算出与建立量子引力的某些普适特征潜在相关的量。本文对红外量子引力的有效途径进行了讨论。我们质疑最近在这方面的结果的有效性,并讨论如何可以检查所谓的普遍性的有效方法。

英文摘要:

Quantum gravity is an important and to great extent unsolved problem. There are many different approaches to the quantization of the metric field, both perturbative and non-perturbative. The current situation in the perturbative quantum gravity is characterized by a number of different models, some of them well elaborated but no one perfect nor mathematically neither phenomenologically, mainly because there are no theoretically derived observables which can be experimentally measured. A very interesting one is an effective approach which separates the low-energy quantum effects from the UV sector. In this way one can calculate quantities which are potentially relevant for establishing certain universal features of quantum gravity. In this presentation we give a polemic consideration of the effective approach to the infrared quantum gravity. We question the validity of the recent results in this area and also discuss how one can check the alleged universality of the effective approach.

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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