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Quantum Phase Transitions of Quasi-One-Dimensional Heisenberg Antiferromagnets

Munehisa Matsumoto·Synge Todo·Chitoshi Yasuda·Hajime Takayama
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Abstract

We study the ground-state phase transitions of quasi-one-dimensional quantum Heisenberg antiferromagnets by the quantum Monte Carlo method with the continuous-time loop algorithm and finite-size scaling. For a model which consists of S=1 chains with bond alternation coupled on a square lattice, we determine the ground state phase diagram and the universality class of the quantum phase transitions.

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Munehisa Matsumoto, Synge Todo, Chitoshi Yasuda, Hajime Takayama. 2003-10-27. Quantum Phase Transitions of Quasi-One-Dimensional Heisenberg Antiferromagnets. https://arxiv.org/abs/cond-mat/0310619

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