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Phys Rev Lett. 2004 Sep 17;93(12):123201. Epub 2004 Sep 14.

Limits on universality in ultracold three-boson recombination.

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1
Department of Physics, Kansas State University, Manhattan, KS 66506, USA.

Abstract

The recombination rate for three identical bosons has been calculated to test the limits of its universal behavior. It has been obtained for several different collision energies and scattering lengths a up to 10(5) a.u., giving rates that vary over 15 orders of magnitude. We find that universal behavior is limited to the threshold region characterized by E equal or less than Planck's 2/2mu(12)a(2), where E is the total energy and mu(12) is the two-body reduced mass. The analytically predicted infinite series of resonance peaks and interference minima is truncated to no more than three of each for typical experimental parameters.

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