1207.3900 (Lars Bonnes et al.)

Adiabatic loading of one-dimensional SU(N) alkaline earth fermions in
optical lattices    [PDF]

Lars Bonnes, Kaden R. A. Hazzard, Salvatore R. Manmana, Ana Maria Rey, Stefan Wessel

Ultracold fermionic alkaline earth atoms confined in optical lattices realize Hubbard models with internal SU(N) symmetries, where N can be as large as ten. Such systems are expected to harbor exotic magnetic physics at temperatures below the superexchange energy scale. Employing quantum Monte Carlo simulations to access the low-temperature regime, we show that after adiabatically loading a weakly interacting gas into the strongly interacting regime of an optical lattice, the final temperature decreases with increasing N. Furthermore, we estimate the temperature scale required to probe correlations associated with low-temperature SU(N) magnetism. Our findings are encouraging for the exploration of exotic large-N magnetic states in ongoing experiments.

View original: http://arxiv.org/abs/1207.3900