CRITICAL PROPERTIES OF HIGHLY FRUSTRATED PYROCHLORE ANTIFERROMAGNETS - COMMENT

We argue that the analysis of Reimers et al. [Phys. Rev. B 45, 7295 (1 992)] of their Monte Carlo data on the Heisenberg pyrochlore antiferro magnet, which suggests a new universality class, is not conclusive. By reanalysis of their data, we demonstrate asymptotic volume dependence in some thermodynamic quantities, which suggests the possibility that the transition may be first order.