Abstract
A one-dimensional quantum formulation of the two-dimensional q-state Potts model is studied using a weak-coupling perturbation expansion for the ground state energy. The series for the spontaneous magnetization, the susceptibility and the specific heat are analysed using the method of Pade approximants. The critical exponents, interpolated to the exact value of the critical coupling, are in good agreement with the conjectures of den Nijs, Alexander and Enting for q = 3 and q = 4.
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