`Here, using nearly integrable ultracold Bose gases, we realize such intermixtures of Bethe strings out of equilibrium, by dynamically tuning interactions from repulsive to attractive. We measure the average binding energy of the strings, revealing the presence of bound states of more than six particles.`
https://doi.org/10.1038/s41467-026-76018-0
#physics #quantumMechanics #quantumPhysics #Bethe #BetheStrings