Dimer-Quadrupolar Quantum Phase Transition in the Quasi-One-Dimensional Heisenberg Model with Biquadratic Interaction
Statistical Mechanics
2015-06-25 v2 Strongly Correlated Electrons
Abstract
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 N\'eel 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.
Keywords
Cite
@article{arxiv.cond-mat/0608446,
title = {Dimer-Quadrupolar Quantum Phase Transition in the Quasi-One-Dimensional Heisenberg Model with Biquadratic Interaction},
author = {Kenji Harada and Naoki Kawashima and Matthias Troyer},
journal= {arXiv preprint arXiv:cond-mat/0608446},
year = {2015}
}
Comments
4 pages, 4 figures