Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2010-01-28
Physics
High Energy Physics
High Energy Physics - Theory
23 pages, 4 figures
Scientific paper
Motivated by Weinberg's asymptotic safety scenario, we investigate the gravitational renormalization group flow in the Einstein-Hilbert truncation supplemented by the wave-function renormalization of the ghost fields. The latter induces non-trivial corrections to the beta-functions for Newton's constant and the cosmological constant. The resulting ghost-improved phase diagram is investigated in detail. In particular, we find a non-trivial ultraviolet fixed point in agreement with the asymptotic safety conjecture, which also survives in the presence of extra dimensions. In four dimensions the ghost anomalous dimension at the fixed point is $\eta_c^* = -1.8$, supporting space-time being effectively two-dimensional at short distances.
Groh Kai
Saueressig Frank
No associations
LandOfFree
Ghost wave-function renormalization in Asymptotically Safe Quantum Gravity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Ghost wave-function renormalization in Asymptotically Safe Quantum Gravity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ghost wave-function renormalization in Asymptotically Safe Quantum Gravity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-253663