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Fixed points of quantum gravity in extra dimensions
journal contributionposted on 2023-06-07, 19:15 authored by Peter Fisher, Daniel LitimDaniel Litim
We study quantum gravity in more than four dimensions with renormalisation group methods. We find a non-trivial ultraviolet fixed point in the Einstein-Hilbert action. The fixed point connects with the perturbative infrared domain through finite renormalisation group trajectories. We show that our results for fixed points and related scaling exponents are stable. If this picture persists at higher order, quantum gravity in the metric field is asymptotically safe. We discuss signatures of the gravitational fixed point in models with low scale quantum gravity and compact extra dimensions.
JournalPhysics Letters B
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- Physics and Astronomy Publications
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