2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/46661Contents: 1. The strong CP problem 2. Dark matter axions 3. The cavity detector of galactic halo axions 4. The phase space structure of cold dark matter halos12 pages, 2 figures, Latex, invited talk at the APCTP Inauguration Conference in Seoul, Korea, June 4-10, 1996 and at the Workshop on Aspects of Dark Matter in Astro- and Particle Physics in Heidelberg, Germany, Sept. 16-20, 1996High Energy Physics - PhenomenologyAstrophysicstext