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

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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.
Modified with improved data; to appear in Phys. Rev. Lett. as a Comment; latex file and one eps file

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Statistical Mechanics, Superconductivity, High Energy Physics - Lattice

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http://salesiana.dossiersoluciones.com/handle/123456789/148699

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9702138
 http://arxiv.org/abs/cond-mat/9702138
 Phys.Rev.Lett. 79 (1997) 001583
 doi:10.1103/PhysRevLett.79.1583

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