Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2012-03-09
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages, prepared for the proceedings of SIAM PHYSICS CONGRESS 2012, Krungsri River Hotel, Phra nakhon Si Ayutthaya during 9-
Scientific paper
The idea of the strongly interacting field theories constitutes one of the pillars of the standard model of particle physics. The goal of this work is to export such theories to cosmology. Here we are interested in models in which the inflaton is a composite object, instead of a fundamental one. In so doing, we first construct the general setup, in the metric formulation, for generic models of composite inflation. We subsequently introduce the relevant examples in which the inflaton is identified with: A) the lightest (composite) scalar field in the minimal walking technicolor theory, and B) the glueball field of a pure Yang-Mills theory. We demonstrate that they were both viable to achieve successful inflation. Surprisingly, we find that the scale of composite inflation is of the order of the expected grand unification scale, $10^{16}$ GeV.
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