Weakly Interacting Bose Gas in the One-Dimensional Limit
Author(s)Kruger, P.; Hofferberth, Sebastian; Mazets, I. E.; Lesanovsky, I.; Schmiedmayer, J.
MetadataShow full item record
We prepare a chemically and thermally one-dimensional (1D) quantum degenerate Bose gas in a single microtrap. We introduce a new interferometric method to distinguish the quasicondensate fraction of the gas from the thermal cloud at finite temperature. We reach temperatures down to kT≈0.5ℏω⊥ (transverse oscillator eigenfrequency ω⊥) when collisional thermalization slows down as expected in 1D. At the lowest temperatures the transverse-momentum distribution exhibits a residual dependence on the line density n1D [n subscript 1D], characteristic for 1D systems. For very low densities the approach to the transverse single-particle ground state is linear in n1D [n subscript 1D].
DepartmentMassachusetts Institute of Technology. Research Laboratory of Electronics; MIT-Harvard Center for Ultracold Atoms
Physical Review Letters
American Physical Society
Krüger, P. et al. “Weakly Interacting Bose Gas in the One-Dimensional Limit.” Physical Review Letters 105.26 (2010) : n. pag. © 2010 The American Physical Society
Final published version