Contraints on Matter from Asymptotic Safety

Abstract

Recent studies of the ultraviolet behaviour of pure gravity suggest that it admits a non-Gaussian attractive fixed point, and therefore that the theory is asymptotically safe. We consider the effect on this fixed point of massless minimally coupled matter fields. The existence of a UV attractive fixed point puts bounds on the type and number of such fields.

5 pages, 2 figures, revtex4; introduction expanded

References in corpus (1)

• Exact evolution equation for the effective potential

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