Spinor Bose condensates loaded in optical lattices have a rich phase diagram characterized by different magnetic order. Here we apply the density matrix renormalization group to accurately determine the phase diagram for spin-1 bosons loaded on a one-dimensional lattice. The Mott lobes present an even or odd asymmetry associated to the boson filling. We show that for odd fillings the insulating phase is always in a dimerized state. The results obtained in this work are also relevant for the determination of the ground state phase diagram of the S=1 Heisenberg model with biquadratic interaction.
ASJC Scopus subject areas
- Physics and Astronomy(all)
Rizzi, M., Rossini, D., De Chiara, G., Montangero, S., & Fazio, R. (2005). Phase diagram of spin-1 bosons on one-dimensional lattices. Physical Review Letters, 95(24). https://doi.org/10.1103/PhysRevLett.95.240404