论文标题
非背景无关的复合重力
Background-Independent Composite Gravity
论文作者
论文摘要
我们探讨了与背景无关的复合重力理论。复合度量的真空预期值满足爱因斯坦的方程（带有校正）作为一致性条件，并选择真空时空。然后，引力相互作用出现在真空相关函数中。即使在动态选择的真空时期组织了扰动理论时，该动作仍然不变。我们讨论了非动力时钟和杆场在分析中的作用，物理可观察物的识别以及对包括标准模型在内的其他理论的概括。
We explore a background-independent theory of composite gravity. The vacuum expectation value of the composite metric satisfies Einstein's equations (with corrections) as a consistency condition, and selects the vacuum spacetime. A gravitational interaction then emerges in vacuum correlation functions. The action remains diffeomorphism invariant even as perturbation theory is organized about the dynamically selected vacuum spacetime. We discuss the role of nondynamical clock and rod fields in the analysis, the identification of physical observables, and the generalization to other theories including the standard model.
