Correlated Trapped Bosons and the Many-Body Efimov Effect

Details Correlated Trapped Bosons and the Many-Body Efimov Effect Correlated Trapped Bosons and the Many-Body Efimov Effect

2002-03-20

arxiv.org/abs/cond-mat/0203400v2

Phys. Rev. Lett. 89, 173002 (2002)

Physics

Condensed Matter

4 pages (RevTeX4), 3 latex-figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.89.173002

We study two-body correlations in systems of identical bosons. We use a Faddeev type of decomposition of the wave function where all pairs of particles are treated equally. We focus on a new multi-particle Efimov effect at large scattering length, where infinitely many loosely bound many-body states appear. A confining external trap only allows a finite number of such spatially extended negative energy states inside the trap. The stability of a Bose condensate is determined by the decay into these model independent intermediate states which in turn decay into dimers.

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