Three-dimensional Potts model

The thermodynamic functions for the three-component Potts model on a simple cubic lattice are constructed as a low-temperature, high-field series and also as a high-temperature, low-field series. Both series predict divergences in the relevant compliances in the same temperature range, which may be evidence for a continuous phase transition. The critical exponents are tentatively determined, and related to a proposed theory for the Potts tricritical point.