Dynamical de Sitter phase and nontrivial holonomy in strongly coupled gauge theories in expanding Universe

We discuss a new scenario for early cosmology when the inflationary de Sitter phase emerges dynamically. This genuine quantum effect occurs as a result of dynamics of the topologically nontrivial sectors in a strongly coupled QCD- like gauge theory in an expanding universe. We test these ideas by explicit computations in hyperbolic space $\mathbb{H}^3_κ\times \mathbb{S}^1_{κ^{-1}}$. We argue that the key element for this idea to work is the presence of nontrivial holonomy computed along $\mathbb{S}^1_{κ^{-1}}$. The effect is non-local in nature, non-analytical in coupling constant and can not be described in terms of any local propagating degree of freedom such as scalar inflaton field $Φ(x)$. We discuss some profound phenomenological consequences of this scenario for inflationary cosmology. We also suggest to test these ideas in a tabletop experiment by measuring some specific corrections to the Casimir pressure in the Maxwell theory formulated on a topologically nontrivial manifold.

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