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A candidate for an UV completion: quadratic gravity in first order formalism by Alvarez, Enrique; Anero, Jesus; Gonzalez-Martin, Sergio; Santos-Garcia, Raquel is a scholarly article available to read on EtoBox.

What is A candidate for an UV completion: quadratic gravity in first order formalism about?

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 $\tfrac{1}{p^2}$. 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.

Author

Alvarez, Enrique; Anero, Jesus; Gonzalez-Martin, Sergio; Santos-Garcia, Raquel

Published

2017

Language

EN