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Tejero, C. F. Cuesta, J. A. Brito López, Ricardo 2023-06-20T18:48:17Z 2023-06-20T18:48:17Z 1989 0022-4715 10.1007/BF01044229 https://hdl.handle.net/20.500.14352/58667 http://dx.doi.org/10.1007/BF01044229 http://link.springer.com/ The 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. metadata only access Long-range inverse 2-spin correlations in one-dimensional potts lattices journal article