Scaling properties of universal tetramers.
We evidence the existence of a universal correlation between the binding energies of successive four-boson bound states (tetramers), for large two-body scattering lengths (a), related to an additional scale not constrained by three-body Efimov physics. Relevant to ultracold atom experiments, the atom-trimer relaxation peaks for |a|→∞ when the ratio between the tetramer and trimer energies is ≃4.6 and a new tetramer is formed. The new scale is also revealed for a < 0 by the prediction of a correlation between the positions of two successive peaks in the four-atom recombination process.
Instituto de Física Teórica, Universidade Estadual Paulista, São Paulo, Brazil.
M R
MR
Hadizadeh
M T
MT
Yamashita
Lauro
L
Tomio
A
A
Delfino
T
T
Frederico