Dortmund 2006 – scientific programme
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T: Teilchenphysik
T 403: Kosmologie I
T 403.2: Talk
Wednesday, March 29, 2006, 16:40–17:00, HG2-HS5
Quantum gravity in extra dimensions — •Peter Fischer1 und Daniel.F. Litim2,3 — 1Institut fuer Theoretische Physik, RWTH Aachen, 52056 Aachen — 2Theory Division, CERN, CH-1211, Geneva 23 — 3School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UK
Field theoretic models in extra dimensions have recently received considerable interest. We study quantum gravity in extra dimensions with renormalisation group methods. A non-trivial fixed point is detected within the Einstein-Hilbert truncation. Its stability properties and universal eigenvalues are deduced for arbitrary gauge fixing parameter. If the fixed point persists within extended truncations, quantum gravity in extra dimensions is asymptotically safe, i.e. non-perturbatively renormalisable. Phenomenological implications of this result are indicated.