Multifractional spacetimes from the Standard Model to cosmology
arXiv:1709.07844 · doi:10.1142/S0219887819400048
Abstract
We review recent theoretical progress and observational constraints on multifractional spacetimes, geometries that change with the probed scale. On the theoretical side, the basic structure of the Standard Model and of the gravitational action is discussed. On the experimental side, we recall the bounds on the scales of the geometry coming from particle physics, astrophysics, and the cosmic microwave background.
11 pages, 1 figure, 4 tables. In Proceedings of the XXV International Fall Workshop on Geometry and Physics (IFWGP), August 29 - September 02, 2016, Madrid, Spain; v2: some updates
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