From General Relativity to Quantum Gravity
From General Relativity to Quantum Gravity
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从广义相对论到量子引力
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
C. Rovelli
中科院分区：
文献类型：
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作者：
A. Ashtekar;M. Reuter;C. Rovelli
在广义相对论中，时空几何不再仅仅是一个背景舞台，而是一个具有自己的自由度的物理和动力实体。我们提出了量子引力方法的概述，其中GR的这个中心特征处于最前沿。然而，量子理论中的短距离动力学与GR和经典时空中的短距离动力学有很大的不同，引力子只在一个合适的极限下出现。我们的重点是沟通关键战略、主要成果和悬而未决的问题。本着这本书的精神，我们将重点放在过去二、三十年来取得最重大进展的几个途径上。
In general relativity (GR), spacetime geometry is no longer just a background arena but a physical and dynamical entity with its own degrees of freedom. We present an overview of approaches to quantum gravity in which this central feature of GR is at the forefront. However, the short distance dynamics in the quantum theory are quite different from those of GR and classical spacetimes and gravitons emerge only in a suitable limit. Our emphasis is on communicating the key strategies, the main results and open issues. In the spirit of this volume, we focus on a few avenues that have led to the most significant advances over the past 2-3 decades.