Ultracold atoms

Physics

Bethe Strings Found in Cold Cesium Gas: A 1931 Prediction Meets a One-Dimensional Experiment

Innsbruck physicists probed Bethe strings, bound states predicted in 1931, in a one-dimensional cesium gas. How the experiment worked, with the binding…

Science

Bethe Strings Observed in an Ultracold Cesium Gas: How a 1931 Prediction Finally Showed Up in the Lab

Physicists in Innsbruck observed Bethe strings, multi-particle bound states predicted in 1931, in a one-dimensional gas of cesium atoms. How the two-expansion…