Background-Independent Composite Gravity
arXiv:2011.06541 · doi:10.1088/1361-6382/abefbd
Abstract
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.
arXiv comment22 pages, 2 figures
References in corpus (13)
- Electric-Magnetic Duality in Supersymmetric Non-Abelian Gauge Theories
- Emergence of a 4D World from Causal Quantum Gravity
- Observables in effective gravity
- Discrete approaches to quantum gravity in four dimensions
- Diffeomorphism-invariant observables and their nonlocal algebra
- Stochastic Emergent Quantum Gravity
- Dynamical Foundations of the Brane Induced Gravity
- Emergent Gravity from Vanishing Energy-Momentum Tensor
- Composite graviton self-interactions in a model of emergent gravity
- Composite gauge-bosons made of fermions
- Composite gravity from a metric-independent theory of fermions
- Curved Backgrounds in Emergent Gravity
- Composite Gravitons from Metric-Independent Quantum Field Theories