Critical exponents and unusual properties of the broken phase in the 3d-RP2 antiferromagnetic model
We present the results of a Monte Carlo simulation of the antiferromagnetic RP^2 model in three dimensions. 
With finite-size scaling techniques we accurately measure the critical exponents and compare them with those of 
O(N) models. We are able to parameterize the corrections-to-scaling. The symmetry properties of the broken 
phase are also studied.
Intermediate phases in mixed nematic/Heisenberg spin models
We prove that in three or higher dimensions, an isotropic, ferromagnetic, nearest-neighbour perturbation of an O(N) nematic liquid crystal model has an intermediate phase. In this intermediate phase, the liquid crystal order parameter is non-zero but the spontaneous magnetization is zero while at low temperatures, these systems exhibit magnetization.
Comment on "Asymptotic scaling in the two-dimensional O(3) sigma model at correlation length 10 "
We explain why in our view an extrapolation from small lattices containing only perturbative information cannot be sufficient to determine nonperturbative qunatities and therefore cannot lead to a trustworthy determination of the correlation length.