Asymptotic scaling of the square lattice quantum Heisenberg antiferromagnet

Details Asymptotic scaling of the square lattice quantum Heisenberg antiferromagnet Asymptotic scaling of the square lattice quantum Heisenberg antiferromagnet

1997-09-30

arxiv.org/abs/cond-mat/9709333v2

Phys. Rev. Lett. 80, 002705 (1998)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures; two references added in revised version

Scientific paper

10.1103/PhysRevLett.80.2705

We present thermodynamic measurements of various physical observables of the two dimensional S=1/2 isotropic quantum Heisenberg antiferromagnet on a square lattice, obtained by quantum Monte Carlo. In particular we have been able to measure the infinite volume limit of the uniform susceptibility up to the inverse temperature beta=40, the analysis of which reveals the correct asymptotic behavior in excellent agreement with the prediction of chiral perturbation theory. The controversy over the existence of a crossover from quantum critical to renormalized classical regime is resolved.

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