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cond-mat.quant-gas2012★ 51 cited
Observation of Thermally Activated Vortex Pairs in a Quasi-2D Bose Gas
Jae-yoon Choi, Sang Won Seo, Yong-il Shin
We measure the in-plane distribution of thermally activated vortices in a trapped quasi-2D Bose gas, where we enhance the visibility of density-depleted vortex cores by radially co…
cond-mat.quant-gas2012★ 34 cited
Probing Phase Fluctuations in a 2D Degenerate Bose Gas by Free Expansion
Jae-yoon Choi, Sang Won Seo, Woo Jin Kwon +1
We measure the power spectrum of the density distribution of a freely expanding 2D degenerate Bose gas, where irregular density modulations gradually develop due to the initial pha…