Phase Diagram of Spin-1 Bosons on One-Dimensional Lattices

Journal Article · Fri Dec 09 00:00:00 EST 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.240404· OSTI ID:20699665

Rizzi, Matteo; Rossini, Davide; De Chiara, Gabriele; Montangero, Simone; Fazio, Rosario ^[1]

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1. NEST-INFM and Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa (Italy)

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 interactio000.

• OSTI ID: 20699665
• Journal Information: Physical Review Letters, Vol. 95, Issue 24; Other Information: DOI: 10.1103/PhysRevLett.95.240404; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ASYMMETRY
BOSE-EINSTEIN CONDENSATION
BOSONS
DENSITY MATRIX
GROUND STATES
HEISENBERG MODEL
ONE-DIMENSIONAL CALCULATIONS
PHASE DIAGRAMS
RENORMALIZATION
SPIN