Feshbach resonance
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English
Etymology
Named after American physicist Herman Feshbach.
Noun
Feshbach resonance (countable and uncountable, plural Feshbach resonances)
- (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.
- Synonym: Fano-Feshbach resonance
- Coordinate term: shape resonance