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14 papers · 1 filter
Amplification of Local Instabilities in a Bose-Einstein Condensate with Attractive Interactions
J. K. Chin, J. M. Vogels, W. Ketterle
We study the collapse of large homogeneous Bose-Einstein condensates due to intrinsic attractive interactions. We observe the amplification of a local instability by seeding a mome…
Coreless vortex formation in a spinor Bose-Einstein condensate
A. E. Leanhardt, Y. Shin, D. Kielpinski +2
Coreless vortices were phase-imprinted in a spinor Bose-Einstein condensate. The three-component order parameter of F=1 sodium condensates held in a Ioffe-Pritchard magnetic trap w…
Bose-Einstein condensates near a microfabricated surface
A. E. Leanhardt, Y. Shin, A. P. Chikkatur +3
Magnetically and optically confined Bose-Einstein condensates were studied near a microfabricated surface. Condensate fragmentation observed in microfabricated magnetic traps was n…
Failure of geometric electromagnetism in the adiabatic vector Kepler problem
J. R. Anglin, J. Schmiedmayer
The magnetic moment of a particle orbiting a straight current-carrying wire may precess rapidly enough in the wire's magnetic field to justify an adiabatic approximation, eliminati…
Second-quantized Landau-Zener theory for dynamical instabilities
J. R. Anglin
State engineering in nonlinear quantum dynamics sometimes may demand driving the system through a sequence of dynamically unstable intermediate states. This very general scenario i…
Inelastic Collision Rates of Trapped Metastable Hydrogen
David Landhuis, Lia Matos, Stephen C. Moss +5
We report the first detailed decay studies of trapped metastable (2S) hydrogen. By two-photon excitation of ultracold H samples, we have produced clouds of at least 5x10^7 magnetic…