arXiv:0711.0022·v2·High Energy Physics — Phenomenology
Natural inflation in 5D warped backgrounds
R. Gonzalez Felipe🇵🇹 · N. M. C. Santos🇵🇹
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.
Comments: 10 pages, 8 figures; matches version to appear in Phys. Rev. D