Symmetry breaking in low-dimensional SU(N) antiferromagnets

Article

关键词: QUANTUM-SPIN CHAINS;    ISOTROPIC HEISENBERG CHAIN;    NONLINEAR SIGMA-MODELS;    LOW-LYING EXCITATIONS;    STATE VERTEX MODELS;    BOND GROUND-STATES;    ORBITAL MODEL;    ARBITRARY SPINS;    PHASE-DIAGRAM;    NEMATIC ORDER;   

DOI  :  10.1103/PhysRevB.78.144428

来源: SCIE

【 摘 要 】

Consequences of explicit symmetry breaking in a physically motivated model of SU(N) antiferromagnet in spatial dimensions one and two are studied. It is shown that the case N=3, which can be realized in spin-1 cold atom systems, displays special properties distinctly different from those for N >= 4. Qualitative form of the phase diagram depending on the model parameters is given.

【 授权许可】

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