A candidate for an UV completion: quadratic gravity in first order formalism
High Energy Physics - Theory
2017-10-06 v1
Abstract
We consider the most general action for gravity which is quadratic in curvature. In this case first order and second order formalisms are not equivalent. This framework is a good candidate for a unitary and renormalizable theory of the gravitational field; in particular, there are no propagators falling down faster than . The UV regime is in a conformal invariant phase; only when Weyl invariance is broken through the coupling to matter can an Einstein-Hilbert term (and its corresponding Planck mass scale) be generated.
Keywords
Cite
@article{arxiv.1710.01764,
title = {A candidate for an UV completion: quadratic gravity in first order formalism},
author = {Enrique Alvarez and Jesus Anero and Sergio Gonzalez-Martin and Raquel Santos-Garcia},
journal= {arXiv preprint arXiv:1710.01764},
year = {2017}
}
Comments
4 pages, presented by E.A at the 18th Lomonosov conference