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Journal of Physics A General Physics (2010) J.Phys.A43:445401,2010.
Unification of gravity, gauge fields, and Higgs bosons
A. Garrett Lisi, Lee Smolin 1, Simone Speziale 2
(2010)

We consider a diffeomorphism invariant theory of a gauge field valued in a Lie algebra that breaks spontaneously to the direct sum of the spacetime Lorentz algebra, a Yang-Mills algebra, and their complement. Beginning with a fully gauge invariant action -- an extension of the Plebanski action for general relativity -- we recover the action for gravity, Yang-Mills, and Higgs fields. The low-energy coupling constants, obtained after symmetry breaking, are all functions of the single parameter present in the initial action and the vacuum expectation value of the Higgs.
1:  Perimeter Institute for Theoretical Physics (PI)
etranger
2:  Centre de Physique Théorique (CPT)
CNRS : FR2291 – Université de Provence - Aix-Marseille I – Université de la Méditerranée - Aix-Marseille II – Université Sud Toulon Var
Physics/General Relativity and Quantum Cosmology

Physics/High Energy Physics - Theory
Fulltext link: 
http://fr.arXiv.org/abs/1004.4866