Lorentz Invariance in Shape Dynamics
arXiv:1404.3696 · doi:10.1088/0264-9381/32/1/015021
Abstract
Shape dynamics is a reframing of canonical general relativity in which time reparametrization invariance is "traded" for a local conformal invariance. We explore the emergence of Lorentz invariance in this model in three contexts: as a maximal symmetry, an asymptotic symmetry, and a local invariance.
v2: discussion of light cone structure added; minor typos fixed; 14 pages
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