Abstract
Abstract Confinement-induced resonances (CIRs) arise when particle scattering takes place in the presence of an external potential that spatially confines the motion of the particles. One finds that for some combinations of the values of the parameters governing the collision—the scattering energy, the parameters that govern the confining potential, and the parameters that govern the interatomic potential—the scattering cross section reaches the unitary limit: this is CIR. We provide details on one paradigmatic case of CIR and review the types of CIRs that have so far been studied theoretically and, more recently, experimentally. The rich variety of examples suggests that CIRs arise under generic confining conditions and that therefore we should expect to continue encountering new examples of them.
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