Universal bosonic tetramers of dimer-atom-atom structure
  Unstable four-boson states having an approximate dimer-atom-atom structure are studied using momentum-space integral equations for the four-particle transition operators. For a given Efimov trimer the universal properties of the lowest associated tetramer are determined. The impact of this tetramer on the atom-trimer and dimer-dimer collisions is analyzed. The reliability of the three-body dimer-atom-atom model is studied. 
A. Deltuva
physics.atom-ph cond-mat.quant-gas nucl-th