Feshbach resonance

English Etymology Named after American physicist Herman Feshbach. Noun ~ en physics The situation where two slow atoms collide and temporarily stick together, forming an unstable compound with a short lifetime. It is a feature of many-body systems in which a bound state is achieved if the coupling(s) between at least one internal degree of freedom and the reaction coordinates, which lead to dissociation, vanish. en Fano-Feshbach resonance en shape resonance en eponyms