Efimov States in a Cesium Gas (IMAGE) Joint Quantum Institute Caption This graph shows the existence of Efimov triplet states as a function of the scattering length, a, and the binding energy. Outside the green area the three atoms exist singly or as a pair plus a lone atom. Inside the green area a series of three-atom states can exist. Credit Picture courtesy of the University of Innsbruck Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.