Wrapping probabilities for Potts spin clusters on a torus
  In this work we obtain wrapping probabilities for Ising spin clusters on a torus. We use the analogy with the tricritical point of a Potts model with dilution. The formula obtained are tested against numerical simulation. We also provide closed form for the wrapping probabilities of cross clusters on untwisted tori. 
Thibault Blanchard
cond-mat.stat-mech