2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40975In the Randall-Sundrum solution to the hierarchy problem, the fluctuations of the size of the extra dimension are characterized by a single scalar field, called the radion. The radion is expected to have a mass somewhat lower than the TeV scale with couplings of order 1/TeV to the trace of the energy momentum tensor. In addition, the radion can mix with the Higgs boson. Implications for phenomenology are briefly reviewed.3 pages, RevTeX4. Contribution to Snowmass 2001High Energy Physics - Phenomenologytext