Thursday, April 18, 2013

1304.4777 (Alessandro Codello et al.)

Consistent closure of RG flow equations in quantum gravity    [PDF]

Alessandro Codello, Giulio D'Odorico, Carlo Pagani
We construct a consistent closure for the beta functions of the cosmological and Newton's constants by evaluating the influence of the fluctuating metric and ghost fields anomalous dimensions on their flow. In this generalized framework we confirm the presence of a UV attractive non-Gaussian fixed-point. Our closure method is general and can be applied systematically to more general truncations of the gravitational effective average action.
View original: http://arxiv.org/abs/1304.4777

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