Phase transitions in various models.
XY-models in 2 and three dimensions. Developing a new way to analyse finite size scaling of the Helicity modulous. This is done by large scale Monte Carlo simulations using cluster update algoritms.
Previous work has also been done on Ising models, Ising spin glass,
Vortex fluctuations, and percolation and Aerogel.
Recently I have also been involved in astronomy projects concerning Globulettes.