In a breakthrough discovery detailed in a paper in the journal Nature Physics, a team of physicists from Finland and the United States has found a way to create knotted solitary waves, or knot solitons, in a quantum-mechanical field. Topological structure of a quantum-mechanical knot soliton: the white ring is the core of the soliton (field pointing down), and the surrounding colored bands define a set of nested tori that illustrate the linked structure...
