Background-independent composite gravity
| Autor: | Austin J. Batz, Luke Mrini, Joshua Erlich |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
High Energy Physics - Theory
Physics Physics and Astronomy (miscellaneous) Spacetime 010308 nuclear & particles physics FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) 01 natural sciences General Relativity and Quantum Cosmology Action (physics) symbols.namesake Theoretical physics High Energy Physics - Theory (hep-th) 0103 physical sciences symbols Quantum gravity Background independence Einstein 010306 general physics Composite gravity Induced gravity Vacuum expectation value |
| Zdroj: | Classical and Quantum Gravity. 38:095008 |
| ISSN: | 1361-6382 0264-9381 |
| DOI: | 10.1088/1361-6382/abefbd |
| Popis: | 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. 22 pages, 2 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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