2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/223156Efimov physics refers to universal phenomena associated with a discrete scaling symmetry in the 3-body problem with a large scattering length. The first experimental evidence for Efimov physics was the recent observation of a resonant peak in the 3-body recombination rate for 133Cs atoms with large negative scattering length. There can also be resonant peaks in the atom-dimer relaxation rate for large positive scattering length. We calculate the atom-dimer relaxation rate as a function of temperature and show how measurements of the relaxation rate can be used to determine accurately the parameters that govern Efimov physics.4 pages, 2 eps figures, normalization error in figures corrected, equations unchangedOther Condensed MatterNuclear Theorytext