Fluctuation-Induced First-Order Phase Transitions Studied by the Monte Carlo Technique

5 September 1977

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 39 (10), 629-632
https://doi.org/10.1103/physrevlett.39.629

Abstract

The critical behavior of a three-dimensional antiferromagnet described by a six-dimensional order parameter has been investigated by the Monte Carlo technique. A first-order phase transition is observed. This result is in agreement with the prediction of renormalization-group calculations in

4 - ε

dimensions and with neutron scattering experiments on U

O_{2}

, but in contrast to the mean-field theory, which leads to a second-order phase transition.

Keywords

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