Finite temperature phase diagram of spin-1/2 bosons in two-dimensional optical lattice L. de Forges de Parny, F. Hébert, V. G. Rousseau and G. G. Batrouni Eur. Phys. J. B, 85 5 (2012) 169 Published online: 28 May 2012 DOI: 10.1140/epjb/e2012-30055-9