2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/171798We illustrate, taking a top-down point of view, how axions and other very weakly interacting sub-eV particles (WISPs) arise in the course of compactification of the extra spatial dimensions in string/M-theory.4 pages, 1 figure, contribution to 4th Patras Workshop on Axions, WIMPs and WISPs, DESY, Hamburg Site/Germany, 18-21 June 2008High Energy Physics - TheoryHigh Energy Physics - Phenomenologytext