2000/09/30 by C. W. Gardiner, Ashton S. Bradley, A. S. Bradley · 7 citations
Chemistry · Physics and Astronomy · #Atomic physics #Cold Atom Physics and Bose-Einstein Condensates #Collision #Collision frequency #Condensed matter physics #Hydrogen #Meteorology #Physics #Plasma #Position (finance) #Quantum mechanics #Quantum, superfluid, helium dynamics #Quasiparticle #Spectroscopy and Laser Applications #Trap (plumbing) #cond-mat
paper · pdf · doi:10.1088/0953-4075/34/23/311
published in Journal of Physics B Atomic Molecular and Optical Physics 34(23), 4663-4672 (IOP Publishing) · Revised version with corrections, which do not significantly affect conclusions. Should be read in conjunction with the new paper cond-mat/0108451. 10 pages J Phys B latex plus 3 postscript figures
arxiv created 2001/08/29 · openalex publication_date 2001/11/23 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We compute an approximate set of longitudinal quasiparticle modes for a hydrogen condensate as produced in the MIT experiments. An expansion in quasiparticles using a simple one-dimensional Bogoliubov picture shows however that at the high temperatures (≈44 µK) and in the very shallow trap employed (ω z = 2π × 10.2 Hz) the contribution to the density from the quasiparticles is about 20% of that from the condensate mode, leading to an effective g 2 ( x , x ) which varies between 1 and 3 depending on the position in the condensate.