2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/215108Concepts of thermalization and hydrodynamical behavior are applied from time to time to e+e-, hadron+hadron and heavy ion collisions. These applications are scrutinized paying attention to particle multiplicities, spectra, and Bose-Einstein correlations in particular. Can hydrodynamics describe these data?7 pages, 3 figures, invited talk at ISMD08, the XXXVIIIth International Symposium on Multiparticle Dynamics, 15-20 September 2008, DESY, Hamburg, GermanyHigh Energy Physics - Phenomenologytext