1. TRIONIC AND QUARTETTING PHASES IN ONE-DIMENSIONAL MULTICOMPONENT ULTRACOLD FERMIONS.
- Author
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LECHEMINANT, P., AZARIA, P., BOULAT, E., CAPPONI, S., ROUX, G., and WHITE, S. R.
- Subjects
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FERMIONS , *ALPHA rays , *CONDENSATION , *ATOMS , *NUCLEAR physics - Abstract
We investigate the possible formation of a molecular condensate, which might be, for instance, the analogue of the alpha condensate of nuclear physics, in the context of multicomponent cold atoms fermionic systems. A simple paradigmatic model of N-component fermions with contact interactions loaded into a one-dimensional optical lattice is studied by means of low-energy and numerical approaches. For attractive interaction, a quasi-long-range molecular superfluid phase, formed from bound-states made of N fermions, emerges at low density. We show that trionic and quartetting phases, respectively for N = 3,4, extend in a large domain of the phase diagram and are robust against small symmetry-breaking perturbations. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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