Free Energy of the Eight Vertex Model with an Odd Number of Lattice Sites
Ovidiu I. Patu
Abstract
We calculate the bulk contribution for the doubly degenerated largest eigenvalue of the transfer matrix of the eight vertex model with an odd number of lattice sites N in the disordered regime using the generic equation for roots proposed by Fabricius and McCoy. We show as expected that in the thermodynamic limit the result coincides with the one in the N even case.
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