三维引力中的拓扑纠缠熵
Topological entanglement entropy in 3D gravity
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中文总结 AI 辅助
本文为三维引力张量网络态推导熵公式,证明其匹配量子极值曲面公式,适用于非时间对称时空,通过正则量子化得出,并扩展至紧致子区域。
中文摘要 AI 辅助
我们为一个最近提出的三维引力态张量网络模型推导了一个熵公式,该模型满足微分同胚不变性的约束方程,并包含物质效应。在考虑时空度量的可逆性之后,我们论证该公式与量子极值曲面公式(对于小而有限的$G_N$)相匹配,且不限于时间对称时空。我们通过正则量子化推导该结果,不依赖路径积分,并讨论了向紧致体子区域的扩展。
英文摘要
We derive an entropy formula for a recently proposed tensor network model of states in 3D gravity which satisfy the constraint equations of diffeomorphism invariance, and including the effects of matter. After accounting for the invertibility of the spacetime metric, we argue that this formula matches the quantum extremal surface formula (for small but finite $G_N$), and is not restricted to time symmetric spacetimes. We derive the result via canonical quantization without relying on path integrals, and discuss an extension to compact bulk subregions.
发表机构
- University of Pennsylvania(宾夕法尼亚大学)
- Santa Fe Institute(圣塔菲研究所)
- Vrije Universiteit Brussel(布鲁塞尔自由大学)
- University of California, Santa Barbara(加利福尼亚大学圣巴巴拉分校)
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