Agravity
By A. Salvio, Alessandro Strumia. Journal of High Energy Physics, 2014
253 citations recorded by the source corpus.
We explore the possibility that the fundamental theory of nature does not contain any scale. This implies a renormalizable quantum gravity theory where the graviton kinetic term has 4 derivatives, and can be reinterpreted as gravity minus an anti-graviton. We compute the super-Planckian RGE of adimensional gravity coupled to a generic matter sector. The Planck scale and a flat space can arise dynamically at quantum level provided that a quartic scalar coupling and its β function vanish at the Planck scale. This is how the Higgs boson behaves for Mh ≈ 125 GeV and Mt ≈ 171 GeV. Within agravity, inflation is a generic phenomenon: the slow-roll parameters are given by the β-functions of the theory, and are small if couplings are perturbative. The predictions ns ≈ 0.967 and r ≈ 0.13 arise if the inflaton is identified with the Higgs of gravity. Furthermore, quadratically divergent corrections to the Higgs mass vanish: a small weak scale is natural and can be generated by agravity quantum corrections.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/e3d01b230bee4d99dd275487dcb4850396147971
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Citations in the corpus
- Classical and quantum initial conditions for Higgs inflation (2015, background): “The RGE of ξ receives contribution from the SM couplings and ξ itself [26,27]:”
- Quadratic Gravity (2018, methodology): “A detailed analysis of the inflationary dynamics and observable predictions in some specific realizations of the QG scenario is provided in [20,21,33].”
- On the quantum field theory of the gravitational interactions (2017, background): “[53]) might survive after switching to the correct formulation of the theory, others might have to be reconsidered.”