Feshbach resonances in ultracold gases

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In this chapter, we describe scattering resonance phenomena in general, and focus on the mechanism of Feshbach resonances, for which a multi-channel treatment is required. We derive the dependence of the scattering phase shift on magnetic field and collision energy. From this, the scattering length and effective range coefficient can be extracted, expressions which are particularly useful for ultracold gases.
Original languageEnglish
Title of host publicationQuantum Gas Experiments : Exploring Many-Body States
EditorsP. Törmä, K. Sengstock
Place of PublicationLondon
PublisherImperial College Press
Number of pages23
Publication statusPublished - 2014

Publication series

NameWorld Scientific Review
NameCold Atoms
ISSN (Print)2045-9734


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