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Dimer-Quadrupolar Quantum Phase Transition in the Quasi-One-Dimensional Heisenberg Model with Biquadratic Interaction

The quasi-one-dimensional S=1 Heisenberg antiferromagnet with a biquadratic term is investigated at zero temperature by quantum Monte Carlo simulation. As the magnitude of the inter-chain coupling is increased, the system undergoes a phase transition from a spontaneously dimerized phase to a Néel ordered or spin nematic phase. The numerical results suggest the possibility of an unconventional second-order transition in which the symmetry group characterizing one phase is not a subgroup of the other.

preprint2006arXivOpen access
Kenji HaradaNaoki KawashimaMatthias Troyer
cond-mat.stat-mechcond-mat.str-el
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Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
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Kenji HaradaNaoki KawashimaMatthias Troyer

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