Most waves lose their shape as they travel, but solitons defy that behavior. These self-reinforcing waves are ubiquitous in natural and artificial environments such as rivers, optical fibers, and even Bose-Einstein condensates (BECs; see Synopsis: Solitons of All Speeds). Now, two teams of researchers have independently created magnetic solitons in a BEC made from atoms with different spins. The experiments establish a new playground for further exploration of quantum solitons.
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