论文标题
首次分析随机复合重力
A First Analysis of Stochastic Composite Gravity
论文作者
论文摘要
我们基于随机过程的量子场理论的表示，对量子重力的非扰动方法进行了首次分析。随机描述可容纳物理Lorentz-Invariant紫外线调节器，该调节器提供了对超短距离物理学的新颖描述。在随机复合重力模型中，我们证明了通用初始场构型向平衡的演变，其中复合时空度量大约在平坦的时空中波动。我们认为，有关真空的波动会引起与爱因斯坦重力长期相一致的新出现的重力相互作用。我们在相应的量子场理论中揭示了通过随机离散性和分类正规化之间的正规化之间的形式相似性。我们评论了新兴时空的签名，对早期宇宙的可能后果以及对量子场理论和引力的随机起源的观察和实验测试的潜力。
We present a first analysis of a nonperturbative approach to quantum gravity based on a representation of quantum field theory in terms of stochastic processes. The stochastic description accommodates a physical Lorentz-invariant ultraviolet regulator that provides a novel description of physics at ultra-short distances. In a stochastic composite gravity model we demonstrate the evolution of a generic initial field configuration towards an equilibrium in which the composite spacetime metric fluctuates about a flat spacetime. We argue that fluctuations about the vacuum give rise to an emergent gravitational interaction consistent with Einstein gravity at long distances. We uncover a formal similarity between regularization by stochastic discreteness and point-splitting regularization in the corresponding quantum field theory. We comment on the signature of the emergent spacetime, possible consequences for the early universe, and the potential for observational and experimental tests of the stochastic origin of quantum field theory and gravitation.
