论文标题
从空白中出生的婴儿宇宙
Baby Universes born from the Void
论文作者
论文摘要
我们提出了第三个量化的婴儿宇宙希尔伯特空间的新颖结构，$ \ mathcal {h} _ {bu} $，用于量子重力路径积分。与$α$ - 参数的原始描述相反，我们的提案中的批量和边界显微镜参数都固定。虫洞和婴儿宇宙似乎是由于精致的可观察到边界双量子场理论的可观察到，这至关重要地涉及量规组的表示空间。路径积分因素的不可减至的表示会导致场理论超选择扇区并替换$α$状态。
We propose a novel construction of a third quantised baby universe Hilbert space $\mathcal{H}_{BU}$ for the quantum gravity path integral. In contrast to the original description of $α$-parameters, both the bulk and boundary microscopic parameters are fixed in our proposal. Wormholes and baby universes appear due to refined observables, of the boundary dual quantum field theories, that crucially involve the space of representations of the gauge group. Irreducible representations, on which the path integral factorises, give rise to field theoretic superselection sectors and replace the $α$ states.
