Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2010-04-27
J.Phys.A43:445401,2010
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
12 pages, no figures. v2 minor corrections
Scientific paper
10.1088/1751-8113/43/44/445401
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.
Lisi Garrett A.
Smolin Lee
Speziale Simone
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