Natural inflation in 5D warped backgrounds
arXiv:0711.0022 · doi:10.1103/PhysRevD.78.023519
Abstract
In light of the five-year data from the Wilkinson Microwave Anisotropy Probe (WMAP), we discuss models of inflation based on the pseudo Nambu-Goldstone potential predicted in five-dimensional gauge theories for different backgrounds: flat Minkowski, anti-de Sitter, and dilatonic spacetime. In this framework, the inflaton potential is naturally flat due to shift symmetries and the mass scales associated with it are related to 5D geometrical quantities.
10 pages, 8 figures; matches version to appear in Phys. Rev. D
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