Confinement and fractionalization in three-components fermionic atomic gases in a 1D optical lattice |
| TYPE | Condensed Matter Seminar |
| Speaker: | Patrick Azaria |
| Affiliation: | Universite Pierre et Marie Curie |
| Date: | 12.01.2011 |
| Time: | 14:30 |
| Location: | Lidow Asher Peres (502) |
| Abstract: | Confinement and fractionalization in three-components fermionic
atomic gases in a 1D optical lattice"
In this talk I shall discuss the low energy physics of generic 3-components
fermionic atoms loaded in a 1D optical lattice. I shall argue that at
generic fillings,
the low-energy excitations are made of bound states of 3 atoms, the
trions. In contrast, at half-filling
and sufficiently weak couplings, the low-energy excitations carry
a fractional number of atoms 3/2. The phase diagram as a function
of couplings and density will be presented and a possible experimental
realization with a mixture made of three hyperfine levels of $^6$Li atoms
will be briefly discussed.
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