Ultracold disappearing act: 'Matter waves' move through one another but never share space

How can two clumps of matter pass through each other without sharing space? Physicists have documented a strange disappearing act by colliding Bose Einstein condensates that appear to keep their distance even as they pass through one another.

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/v...