Phys. Rev. Lett. 102, 133201 (2009) [4 pages]Efimov Trimer Formation via Ultracold Four-Body RecombinationReceived 22 August 2008; published 30 March 2009 We discuss the collisional formation of Efimov trimers via ultracold four-body recombination. In particular, we consider the reaction A+A+A+B→A3+B with A and B ultracold atoms. We obtain expressions for the four-body recombination rate up to an overall constant and show that it reflects the three-body Efimov physics either as a function of collision energy or as a function of the two-body s-wave scattering length between A atoms. In addition, we briefly discuss issues important for experimentally observing this interesting and unexplored process. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.102.133201
DOI:
10.1103/PhysRevLett.102.133201
PACS:
34.50.Cx, 03.75.Mn, 31.15.xj
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