Scale Dependent Metric and Minimal Length in QEG

Details Scale Dependent Metric and Minimal Length in QEG Scale Dependent Metric and Minimal Length in QEG

2006-10-05

arxiv.org/abs/hep-th/0610064v1

J.Phys.A40:6595-6606,2007

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, 1 figure, Talk given by M.R. at IRGAC 2006, Barcelona, Spain, July 11-15, 2006

Scientific paper

10.1088/1751-8113/40/25/S04

The possibility of a minimal physical length in quantum gravity is discussed within the asymptotic safety approach. Using a specific mathematical model for length measurements ("COM microscope") it is shown that the spacetimes of Quantum Einstein Gravity (QEG) based upon a special class of renormalization group trajectories are "fuzzy" in the sense that there is a minimal coordinate separation below which two points cannot be resolved.

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