论文标题
4d爱因斯坦 - 加斯 - 邦纳特重力理论：评论
The 4D Einstein-Gauss-Bonnet Theory of Gravity: A Review
论文作者
论文摘要
我们回顾了4D Einstein-Gauss-Bonnet Gravity的主题，在过去的两年中，它一直引起人们的关注。我们的审查始于对Lovelock定理的一般介绍，而Gauss-Bonnet术语在重力行动中的主题。这些领域对于理解修改后的重力理论至关重要，并随后讨论了最近尝试通过重新缩放适当的耦合参数来将高斯式术语纳入四个时空维度的影响。我们讨论实施这一想法所涉及的数学复杂性，并回顾构建制定良好定义的自吻合理论的最新尝试。然后，我们继续考虑在黑洞，宇宙学和弱场重力的背景下，这些理论引起的引力物理学。我们表明，4D爱因斯坦 - 加斯 - 邦网重力在每个地区都表现出许多有趣的现象。
We review the topic of 4D Einstein-Gauss-Bonnet gravity, which has been the subject of considerable interest over the past two years. Our review begins with a general introduction to Lovelock's theorem, and the subject of Gauss-Bonnet terms in the action for gravity. These areas are of fundamental importance for understanding modified theories of gravity, and inform our subsequent discussion of recent attempts to include the effects of a Gauss-Bonnet term in four space-time dimensions by re-scaling the appropriate coupling parameter. We discuss the mathematical complexities involved in implementing this idea, and review recent attempts at constructing well-defined, self-consistent theories that enact it. We then move on to consider the gravitational physics that results from these theories, in the context of black holes, cosmology, and weak-field gravity. We show that 4D Einstein-Gauss-Bonnet gravity exhibits a number of interesting phenomena in each of these areas.
