期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 6, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP06(2014)080
关键词
Cosmology of Theories beyond the SM; Renormalization Group; Models of Quantum Gravity
资金
- ESF [MTT8]
- European Programme [SF0690030s09, PITN-GA-2009-237920]
- Spanish Ministry of Economy and Competitiveness [FPA2012-32828]
- Consolider-CPAN [CSD2007-00042]
- C.A. de Madrid [HEPHACOS-S2009/ESP1473]
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 beta function vanish at the Planck scale. This is how the Higgs boson behaves for M-h approximate to 125 GeV and M-t approximate to 171 GeV. Within agravity, inflation is a generic phenomenon: the slow-roll parameters are given by the beta-functions of the theory, and are small if couplings are perturbative. The predictions n(s) approximate to 0.967 and r approximate to 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.
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