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Temperature dependent correlation length for the S=1/2 Quantum Heisenberg Antiferromagnet on the square lattice

Jae-Kwon Kim·D. P. Landau·Matthias Troyer
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Abstract

We present an analysis of high precision Monte Carlo data for the two dimensional S=1/2 quantum Heisenberg antiferromagnet up to $ξ= 95.7(3)$ obtained by the continuous time version of the loop algorithm. Our data are in good agreement with a prediction of the recent theory (Phys. Rev. Lett. vol. 77, 3439 (1996)) in very high temperature regime, but they strongly disagree with it in the low temperature regime.

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Jae-Kwon Kim, D. P. Landau, Matthias Troyer. 1997-06-19. Temperature dependent correlation length for the S=1/2 Quantum Heisenberg Antiferromagnet on the square lattice. https://doi.org/10.1103/physrevlett.79.1583

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