21 January 2013 to 15 February 2013
Nordita
Europe/Stockholm timezone

Three-body problem in a two-dimensional Fermi gas

25 Jan 2013, 10:00
30m
132:028 (Nordita)

132:028

Nordita

Speaker

Dr Jesper Levinsen (University of Cambridge)

Description

We investigate the three-body properties of two identical "up" fermions and one distinguishable "down" atom interacting in a strongly confined two-dimensional geometry. We compute exactly the atom-dimer scattering properties and the three-body recombination rate as a function of collision energy and mass ratio m_up/m_down. We find that the recombination rate for fermions is strongly energy dependent, similarly to what was found for two-dimensional identical bosons. For m_up < m_down, the s-wave atom-dimer scattering below threshold is completely described by the scattering length. Furthermore, we examine the "up-up- down" bound states (trimers) appearing at large m_up/m_down and find that the energy spectrum for the deepest bound trimers resembles that of a hydrogen atom confined to two dimensions.

Primary author

Dr Jesper Levinsen (University of Cambridge)

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