Numerical simulations of the formation of vortex-antivortex lattices as expanding wave packets interfere in an evolving two-component Bose-Einstein condensate. See also Physical Review Focus story.

From the article:

Texture Control in a Pseudospin Bose-Einstein Condensate
Gary Ruben, Michael J. Morgan, and David M. Paganin
Phys. Rev. Lett. 105, 220402 (2010)

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