File:2-D Bose-Einstein condensates (BECs); Berezinskii, Kosterlitz and Thouless (BKT) transition (5940300549).jpg

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A gas of atoms arranged in a single, flat layer ordinarily has 'thermal' behavior (left) in which the atoms act as individual entities. At lowered temperatures, the gas transforms into a 'quasi-condensate' (middle) consisting of little islands (schematically represented as colored blobs) that fluctuate in time; within each island atoms act as a single coordinated entity. At lower temperatures still, the gas enters the superfluid 'BKT' phase (right): the islands start to coalesce and atoms can flow frictionlessly within the merged area.

Credit: Kristian Helmerson, JQI

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Source 2-D Bose-Einstein condensates (BECs); Berezinskii, Kosterlitz and Thouless (BKT) transition
Author National Institute of Standards and Technology

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This image is in the public domain in the United States because it is a work of the United States Federal Government, specifically an employee of the National Institute of Standards and Technology, under the terms of Title 17, Chapter 1, Section 105 of the US Code.

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This image was originally posted to Flickr by National Institute of Standards and Technology at https://flickr.com/photos/63059536@N06/5940300549. It was reviewed on 7 September 2016 by FlickreviewR and was confirmed to be licensed under the terms of the United States Government Work.

7 September 2016

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current02:20, 7 September 2016Thumbnail for version as of 02:20, 7 September 20162,595 × 885 (1.2 MB)Vanished Account Byeznhpyxeuztibuo (talk | contribs)Transferred from Flickr via Flickr2Commons

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