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

摘要

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-epsilon dimensions and with neutron scattering experiments on UO sub 2 , but in contrast to the mean field theory, which leads to a second order phase transition. (Atomindex citation 10:424394)