Marco Guglielmino - Politecnico di Torino #
Ising antiferromagnet with ultracold bosonic mixtures
confined in  a harmonic trap #
 We present accurate results based on Quantum Monte
Carlo simulations of
   two-component bosonic systems on a square lattice and
in the presence of
   an external harmonic confinement. Starting from
hopping parameters and
   interaction strenght which stabilize the Ising
antiferromagnetic phase
   in the homogeneous case and at half filing factor, we
study how the
   presence of the harmonic confinement challenge the
ralization of such
   phase. We consider realistic trapping frequencies and
number of particle,
   and establish under which conditions, i.e. total
number of particles and
   unbalance between the two component, the
antiferromagnetic phase can be
   observed in the trap.