Fermionic trimers in spin-dependent optical lattices

Details Fermionic trimers in spin-dependent optical lattices Fermionic trimers in spin-dependent optical lattices

2010-10-15

arxiv.org/abs/1010.3105v2

CRAS (Paris) Physique 12, p. 39-46 (2011)

Physics

Condensed Matter

Quantum Gases

8 pages, 5 figures, special few-body issue of the Journal of the French Academy of Sciences (CRAS)

Scientific paper

We investigate the formation of three-body bound states (trimers) in two-component Fermi gases confined in one dimensional optical lattice with spin-dependent tunneling rates. The binding energy and the effective mass of the trimer are obtained from the solution of the Mattis integral equation generalized to the case of unequal Bloch masses. We show that this equation admits multiple solutions corresponding to excited bound states, which are only stable for large mass asymmetry.

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