Abstract
Three oriented bosonic dipoles are treated by using the hyperspherical adiabatic representation, providing numerical evidence that the Efimov effect persists near a two-dipole resonance and in a system where angular momentum is not conserved. Our results further show that the Efimov features in scattering observables become universal, with a known three-body parameter; i.e., the resonance energies depend only on the two-body physics, which also has implications for the universal spectrum of the four-dipole problem. Moreover, the Efimov states should be long-lived, which is favorable for their creation and manipulation in ultracold dipolar gases. Finally, deeply bound two-dipole states are shown to be relatively stable against collisions with a third dipole, owing to the emergence of a repulsive interaction originating in the angular momentum nonconservation for this system.
- Received 7 March 2011
DOI:https://doi.org/10.1103/PhysRevLett.106.233201
© 2011 American Physical Society
Synopsis
New place to search for Efimov states
Published 10 June 2011
Three-body bound states, known to form among spherically symmetric atoms, should also exist for dipole molecules.
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