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Dynamics of F=2 Spinor Bose-Einstein Condensates

H. Schmaljohann·M. Erhard·J. Kronjäger·M. Kottke·S. van Staa·J. J. Arlt·K. Bongs·K. Sengstock
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Abstract

We experimentally investigate and analyze the rich dynamics in F=2 spinor Bose-Einstein condensates of Rb87. An interplay between mean-field driven spin dynamics and hyperfine-changing losses in addition to interactions with the thermal component is observed. In particular we measure conversion rates in the range of 10^-12 cm^3/s for spin changing collisions within the F=2 manifold and spin-dependent loss rates in the range of 10^-13 cm^3/s for hyperfine-changing collisions. From our data we observe a polar behavior in the F=2 ground state of Rb87, while we measure the F=1 ground state to be ferromagnetic. Furthermore we see a magnetization for condensates prepared with non-zero total spin.

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H. Schmaljohann, M. Erhard, J. Kronjäger, M. Kottke, S. van Staa, J. J. Arlt, K. Bongs, K. Sengstock. 2003-08-14. Dynamics of F=2 Spinor Bose-Einstein Condensates. https://doi.org/10.1103/physrevlett.92.040402

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