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7 papers · 2 filters
Vortex formation in a stirred Bose-Einstein condensate
K. W. Madison, F. Chevy, W. Wohlleben +1
Using a focused laser beam we stir a Bose-Einstein condensate of 87Rb confined in a magnetic trap and observe the formation of a vortex for a stirring frequency exceeding a critica…
Bogoliubov transformation for distinguishable particles
Markus Holzmann, Franck Laloë
The Bogoliubov transformation is generally derived in the context of identical bosons with the use of ``second quantized'' a and operators (or, equivalently, in field…
Bose-Einstein condensation in quasi2D trapped gases
D. S. Petrov, M. Holzmann, G. V. Shlyapnikov
We discuss BEC in (quasi)2D trapped gases and find that well below the transition temperature the equilibrium state is a true condensate, whereas at intermediate temperatures…
Evaporative cooling of an atomic beam
E. Mandonnet, A. Minguzi, R. Dum +3
We present a theoretical analysis of the evaporative cooling of an atomic beam propagating in a magnetic guide. Cooling is provided by transverse evaporation. The atomic dynamics i…
The transition temperature of the dilute interacting Bose gas
Gordon Baym, Jean-Paul Blaizot, Markus Holzmann +2
We show that the critical temperature of a uniform dilute Bose gas must increase linearly with the s-wave scattering length describing the repulsion between the particles. Because…
Transition Temperature of the homogeneous, weakly interacting Bose gas
Markus Holzmann, Werner Krauth
We present a Monte Carlo calculation for up to bosons in 3 D to determine the shift of the transition temperature due to small interactions . We generate indepen…