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Accueil du site > Séminaires > Séminaires 2014 > Strongly correlated phases in bosonic cold atoms gases in an artificial gauge field

Mardi 18 février 2014-14:00

Strongly correlated phases in bosonic cold atoms gases in an artificial gauge field

Antoine Sterdyniak (ITP Innsbruck)

par Gabriel LeMarié - 18 février 2014

In the last years, an important research effort has been devoted to the realization of strong magnetic fields in neutral atoms cold gases, which results in very recent experimental implementations of the Hofstadter model. In the strong interacting regime, this could lead to the observation of the fractional quantum hall effect in a controlled environment. The simplest system on which the effect of an artificial gauge field can be addressed is ladder systems in which it leads to the emergence of strongly correlated phases of matter that could soon be experimentally realized. In this talk, i will first introduce optical flux lattices. These are continuous models that exhibit topological flat bands with a tunable Chern number and host fractional states beyond the fractional quantum Hall effect. Then, I will present the phase diagram of interacting bosons subject to an artificial gauge field on a ladder at unit filling and i will show how the different phases can be characterized.

Post-scriptum :

contact : D. Poilblanc