Prediction of Feshbach resonances in collisions of ultracold rubidium atoms

J.M. Vogels, S.J.J.M.F. Kokkelmans, B.J. Verhaar, C.C. Tsai, R.S. Freeland, D.J. Heinzen

Research output: Contribution to conferencePaper

Abstract

We have combined results of our observation of shape resonances in ^85Rb and ^87Rb, the JILA experiment realizing two coexisting Bose condensates in ^87Rb, and our cold-atom optical double resonance observation of the least-bound ^85Rb2 states(R.S. Freeland, C.C. Tsai, J.M. Vogels, D.J. Heinzen, and B.J. Verhaar (to be published)), to describe the collisions of cold Rb atoms with unprecedented accuracy. This enables us(J.M. Vogels, C.C. Tsai, R.S. Freeland, S.J.J.M.F. Kokkelmans, B.J. Verhaar, and D.J. Heinzen (to be published)) to predict B-field induced Feshbach resonances, thus making it possible to control the sign and magnitude of the effective particle-particle interaction in a Bose condensate by tuning a bias magnetic field. For a gas of ^85Rb atoms they are found to occur in the low-field seeking B-range. For ^87Rb we predict them to occur at negative field values.
Original languageEnglish
Publication statusPublished - 1 Apr 1997
Event1997 Joint APS/AAPT Meeting, April 18-21, 1997, Washington, DC. - Washington, DC, United States
Duration: 18 Apr 199721 Apr 1997
http://www.phys.lsu.edu/mog/mog9/node5.html

Conference

Conference1997 Joint APS/AAPT Meeting, April 18-21, 1997, Washington, DC.
Country/TerritoryUnited States
CityWashington, DC
Period18/04/9721/04/97
Internet address

Bibliographical note

K19.04

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