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Deutsche Physikalische Gessellschaft IOP Institute of Physics

Three-body recombination of cold fermionic atoms

H Suno1, B D Esry1 and Chris H Greene2

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Recombination of identical, spin-polarized fermions in cold three-body collisions is investigated. We parametrize the mechanisms for recombination in terms of the `scattering volume' Vp and another length scale r0. Model two-body interactions were used within the framework of the adiabatic hyperspherical representation. We examine the recombination rate K3 as a function of the collision energy E for various values of Vp. Not only do we consider the dominant JΠ = 1+ case, but also the next-leading order contributions from JΠ = 1- and 3-. We discuss the behaviour near a two-body resonance and the expected universality of fermionic recombination. Comparisons with boson recombination are considered in detail.


PACS

05.30.Fk Fermion systems and electron gas

37.10.De Atom cooling methods

03.75.Ss Degenerate Fermi gases

Subjects

Atomic and molecular physics

Quantum gases, liquids and solids

Statistical physics and nonlinear systems

Dates

Issue 1 (May 2003)

Received 18 March 2003

Published 30 May 2003



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