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Weakly interacting Bose gas in the one-dimensional limit | | P. Krüger
; S. Hofferberth
; I. E. Mazets
; I. Lesanovsky
; J. Schmiedmayer
; | | Date: |
14 Dec 2010 | | Abstract: | 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 $kTapprox
0.5hbaromega_perp$ (transverse oscillator eigenfrequency $omega_perp$)
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 $n_{1d}$, characteristic for 1d systems. For
very low densities the approach to the transverse single particle ground state
is linear in $n_{1d}$. | | Source: | arXiv, 1012.3048 | | Services: | Forum | Review | PDF | Favorites | |
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