Linking shape dynamics and loop quantum gravity
@article{Smolin2014LinkingSD, title={Linking shape dynamics and loop quantum gravity}, author={Lee Smolin}, journal={Physical Review D}, year={2014}, volume={90}, pages={044070} }
Shape dynamics is a reformulation of general relativity, locally equivalent to Einstein’s theory, in which the refoliation invariance of the older theory is traded for local scale invariance. Shape dynamics is here derived in a formulation related to the Ashtekar variables by beginning with a modification of the Plebanski action. The constraints of shape dynamics and their algebra are reproduced in terms of these new variables.
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References
SHOWING 1-10 OF 32 REFERENCES
The link between general relativity and shape dynamics
- Physics
- 2011
We define the concept of a linking theory and show how two equivalent gauge theories possessing different gauge symmetries generically arise from a linking theory. We show that under special…
Loop Quantization of Shape Dynamics
- Physics
- 2013
Loop Quantum Gravity (LQG) is a promising approach to quantum gravity, in particular because it is based on a rigorous quantization of the kinematics of gravity. A difficult and still open problem in…
The gravity/CFT correspondence
- Physics
- 2013
General Relativity can be formulated in terms of a spatially Weyl invariant gauge theory called Shape Dynamics. Using this formulation, we establish a “bulk/bulk” duality between gravity and a Weyl…
A shape dynamical approach to holographic renormalization
- Physics
- 2015
We provide a bottom-up argument to derive some known results from holographic renormalization using the classical bulk–bulk equivalence of General Relativity and Shape Dynamics, a theory with spatial…
2+1 gravity on the conformal sphere
- Physics
- 2013
We show that there are two equivalent first order descriptions of $2+1$ gravity with a nonzero cosmological constant. One is the well-known spacetime description, and the other is in terms of…
Loop quantum gravity without the Hamiltonian constraint
- Physics
- 2013
We show that under certain technical assumptions, including the existence of a constant mean curvature (CMC) slice and strict positivity of the scalar field, general relativity conformally coupled to…
On a partially reduced phase space quantization of general relativity conformally coupled to a scalar field
- Physics
- 2013
The purpose of this paper is twofold. On the one hand, after a thorough review of the matter free case, we supplement the derivations in our companion paper on ‘loop quantum gravity without the…
On the separation of Einsteinian substructures
- Physics
- 1977
Within the spinorial version of the Cartan structure formulas with the built‐in (complex) Einstein vacuum equations some closed semi‐Einsteinian substructures are isolated and discussed. Then the…
Conformal Superspace: The Configuration space of general relativity
- Physics, Mathematics
- 2010
It has long been considered that conformal superspace is the natural configuration space for canonical general relativity. However, this was never definitively demonstrated. We have found that the…