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Observation of the Presuperfluid Regime in a Two-Dimensional Bose Gas Public Deposited
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https://scholar.colorado.edu/concern/articles/k643b174j
- Abstract
- In complementary images of coordinate-space and momentum-space density in a trapped 2D Bose gas, we observe the emergence of presuperfluid behavior. As phase-space density ρ increases toward degenerate values, we observe a gradual divergence of the compressibility κ from the value predicted by a bare-atom model, κba. κ/κba grows to 1.7 before ρ reaches the value for which we observe the sudden emergence of a spike at p=0 in momentum space. Momentum-space images are acquired by means of a 2D focusing technique. Our data represent the first observation of non-mean-field physics in the presuperfluid but degenerate 2D Bose gas.
- Creator
- Date Issued
- 2010-12-03
- Academic Affiliation
- Journal Title
- Journal Issue/Number
- 23
- Journal Volume
- 105
- File Extent
- 230408-1-230408-4
- Last Modified
- 2019-12-05
- Resource Type
- Rights Statement
- DOI
- 10.1103/PhysRevLett.105.230408
- ISSN
- 0031-9007
- Language
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observationOfThePresuperfluidRegimeInATwoDimensionalBose.pdf | 2019-12-05 | Public | Download |