Quantum gravity as a low energy effective field theory
Quantum gravity as a low energy effective field theory
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量子引力作为低能有效场理论
DOI：
10.4249/scholarpedia.32997
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
J. Donoghue
中科院分区：
文献类型：
--
作者：
J. Donoghue
有效场论是只使用在某种能量下可用的主动自由度的场论。应用全量子场论处理。如果处理得当，结果将编码与该能量相适应的量子修正。量子广义相对论的微扰处理表现为一种有效的场论，并且可以计算出定义良好的量子修正。本文讨论了有效场论及其在广义相对论中的应用。
An Effective Field Theory is one which uses only the active degrees of freedom available at some energy. A full quantum field theory treatment is applied. When done properly, the results encode the quantum corrections appropriate to that energy. The perturbative treatment of quantum General Relativity behaves as an effective field theory, and well defined quantum corrections can be calculated. This review discusses effective field theory and its application to general relativity.