Abstract
We study the stabilization of an extra-dimensional radius in the presence of a Wilson line phase of an extra $U(1)$ gauge symmetry on a five-dimensional space-time, using the effective potential relating both the radion and the Wilson line phase at the one-loop level. We find that the radion can be stabilized by the introduction of a small number of fermions.
Highlights
Recent observation of dark energy in our universe has led to the conviction that the cosmological constant Λ has an infinitesimal positive value
It has been proposed that the strong infrared (IR) divergence property of quantum corrections on dS space may explain the smallness of Λ in our current universe
The Einstein equation describes the relation between the space-time Ricci tensor Rμν and the energy momentum (EM) tensor Tμν due to the presence of matter
Summary
Recent observation of dark energy in our universe has led to the conviction that the cosmological constant Λ has an infinitesimal positive value. Sitter (dS) space with the Hubble constant H being Λ. It has been proposed that the strong infrared (IR) divergence property of quantum corrections on dS space may explain the smallness of Λ in our current universe (so called cosmological constant problem). The Einstein equation describes the relation between the space-time Ricci tensor Rμν and the energy momentum (EM) tensor Tμν due to the presence of matter.
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