Bethe strings reportedly created and observed in ultracold atomic gas
A post describing research reported in Nature Communications says these particle groups were predicted by Hans Bethe in 1931 and arise from quantum interactions rather than chemical bonds.
TLDR
According to a post describing research reported in Nature Communications, scientists from the University of Innsbruck, University of Amsterdam and Technical University of Munich created, manipulated and collided Bethe strings in an ultracold atomic gas, and studied their stability. Predicted in 1931, these particle groups form in certain one-dimensional quantum systems. The post describes the experiment as a new way to study how strongly interacting particles behave in one dimension.
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