Feshbach resonances in ultracold 85Rb

We present 17 experimentally confirmed Feshbach resonances in optically trapped 85Rb. Seven of the resonances are in the ground-state channel (f,m_f) = (2,+2)+(2,+2), and nine are in the excited-state channel (2,-2)+(2,-2). We find a wide resonance at high field in each of the two channels, offering...

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Published inarXiv.org
Main Authors Blackley, Caroline L, Le Sueur, C Ruth, Hutson, Jeremy M, McCarron, Daniel J, Köppinger, Michael P, Hung-Wen, Cho, Jenkin, Daniel L, Cornish, Simon L
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 21.12.2012
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Physics - Atomic Physics
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Summary:We present 17 experimentally confirmed Feshbach resonances in optically trapped 85Rb. Seven of the resonances are in the ground-state channel (f,m_f) = (2,+2)+(2,+2), and nine are in the excited-state channel (2,-2)+(2,-2). We find a wide resonance at high field in each of the two channels, offering new possibilities for the formation of larger 85Rb condensates and studies of few-body physics. A detailed coupled-channels analysis is presented to characterize the resonances, and also provides an understanding of the inelastic losses observed in the excited-state channel. In addition we have confirmed the existence of one narrow resonance in a (2,+2)+(3,+3) spin mixture.
ISSN:2331-8422
DOI:10.48550/arxiv.1212.5446