Tejero, C. F.Cuesta, J. A.Brito López, Ricardo2023-06-202023-06-201989-070022-471510.1007/BF01044229https://hdl.handle.net/20.500.14352/58667The inverse two-spin correlation function of a one-dimensional three-state Potts lattice with constant nearest-neighbor interactions in a uniform external field is derived exactly. It is shown that the external field induces long-range correlations. The inverse two-spin correlation function decays in a monotonie exponential fashion for a ferromagnetic lattice, while it decays in an oscillatory exponential fashion for an antiferromagnetic lattice. With no external field the inverse two-spin correlation function has a finite range equal to that of the interactions.journal articlehttp://dx.doi.org/10.1007/BF01044229http://link.springer.com/metadata only access536Inverse two-spin correlation functionOne-dimensionalPottsModelIsing modelLattice model.Termodinámica2213 Termodinámica