The Unitary three-body problem in a trap

2006
5 pages
Published in:
  • Phys.Rev.Lett. 97 (2006) 150401
e-Print:

Citations per year

2006201120162021202402468
Abstract: (arXiv)
We consider either 3 spinless bosons or 3 equal mass spin-1/2 fermions, interacting via a short range potential of infinite scattering length and trapped in an isotropic harmonic potential. For a zero-range model, we obtain analytically the exact spectrum and eigenfunctions: for fermions all the states are universal/ for bosons there is a coexistence of decoupled universal and efimovian states. All the universal states, even the bosonic ones, have a tiny 3-body loss rate. For a finite range model, we numerically find for bosons a coupling between zero angular momentum universal and efimovian states/ the coupling is so weak that, for realistic values of the interaction range, these bosonic universal states remain long-lived and observable.
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