Phase Transition in Long-Range $q-$state Models via Contours. Clock and Potts Models with Fields

Lucas Affonso, Rodrigo Bissacot, Gilberto Faria +1

Using the group structure of the state space of $q-$state models, a new definition of contour for long-range spin-systems in ${\mathbb{Z}}^d$ ($d\ge 2$), and a multidimensional version of F…