Composite gravity - Wikipedia
In theoretical physics, composite gravity refers to models that attempted to derive general relativity in a framework where the graviton is constructed as a composite bound state of more elementary particles, usually fermions.
[2011.06541] Background-Independent Composite Gravity
2020年11月12日 · 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.
We explore a background-independent theory of composite gravity. The vacuum expectation value of the composite metric satis es Einstein’s equations (with corrections) as a consistency condition, and selects the vacuum spacetime. A gravitational interaction then emerges in vacuum correlation functions.
Composite gravity from a metric-independent theory of fermions
2019年6月13日 · We present a metric-independent, diffeomorphism-invariant model with interacting fermions that contains a massless composite graviton in its spectrum. The model is motivated by the supersymmetric D-brane action, modulated by a fermion potential. The gravitational coupling is related to new physics at the cutoff scale that regularizes UV ...
Composite gravity - Scientific Lib
2008年7月8日 · In theoretical physics, composite gravity refers to models that attempted to derive general relativity in a framework where the graviton is constructed as a composite bound state of more elementary particles, usually fermions.
Mathematical structure and physical content of composite gravity …
2020年9月9日 · The natural constraints for the weak-field approximation to composite gravity, which is obtained by expressing the gauge vector fields of the Yang-Mills theory based on the Lorentz group in terms of tetrad variables and their derivatives, are analyzed in detail within a canonical Hamiltonian approach.
Composite gravity and composite supergravity from non-linear ...
1983年1月27日 · Composite gravity and composite supergravity models are proposed. We show that one can construct, from one set of fundamental Goldstone fields, the composite gravity as well as the composite Yang-Mills theory describing internal symmetries.
Coordinate conditions and field equations for pure composite gravity
2021年1月22日 · We here propose Lorentz covariant coordinate conditions for the composite theory of pure gravity developed from the Yang-Mills theory based on the Lorentz group, thereby completing this previously proposed higher derivative theory of gravity.
Mathematical structure and physical content of composite gravity …
2020年9月9日 · In the weak-field approximation, geodesic particle motion in static isotropic gravitational fields is found for both coupling mechanisms. An important issue is the proper Lorentz covariant...
In a stochastic composite gravity model we demonstrate the evolu-tion of a generic initial eld con guration towards an equilibrium in which the composite spacetime metric uctuates about a at spacetime. We argue that uctuations about the vacuum give rise to an emergent gravitational interaction consistent with Einstein gravity at long distances.