用分区对偶约束高阶引力
Constraining higher order gravities with subregion duality
摘要：
在高阶导数理论中，引力可以比光传播得更慢或更快。考虑到这一特点，我们重新审视这种类型的理论的因果和纠缠楔形的建设，并认为他们必须使用最快的模式，而不是零射线。我们证明了因果楔形包含的性质，即，因果楔必须包含在纠缠楔中的事实导致对耦合的约束比由双曲性和边界因果性施加的约束更严格。我们的结果意味着，充分利用次区域-次区域对偶性可以得到与先前基于高能引力子散射得到的结论相同的结论。我们说明了我们的研究结果与系统的分析高斯-邦纳重力。
英文摘要：
In higher derivative theories, gravity can travel slower or faster than light. With this feature in mind, we revisit the construction of the causal and entanglement wedges in this type of theories, and argue that they must be constructed using the fastest mode instead of null rays. We show that the property of causal wedge inclusion, i.e., the fact that the causal wedge must be contained in the entanglement wedge, leads to more stringent constraints on the couplings than those imposed by hyperbolicity and boundary causality. Our results imply that the full power of subregion-subregion duality could lead to the same conclusions previously obtained based on high energy graviton scattering. We illustrate our findings with a systematic analysis in Gauss-Bonnet gravity.
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