Dalmazi, D. [UNESP]Sa, F. L. [UNESP]2014-05-202014-05-202010-11-05Physical Review E. College Pk: Amer Physical Soc, v. 82, n. 5, p. 8, 2010.1539-3755http://hdl.handle.net/11449/9233We show here for the one-dimensional spin-1/2 axial-next-to-nearest-neighbor Ising model in an external magnetic field that the linear density of Yang-Lee zeros may diverge with critical exponent sigma=-2/3 at the Yang-Lee edge singularity. The necessary condition for this unusual behavior is the triple degeneracy of the transfer-matrix eigenvalues. If this condition is absent we have the usual value sigma=-1/2. Analogous results have been found in the literature in the spin-1 Blume-Emery-Griffths model and in the three-state Potts model in a magnetic field with two complex components. Our results support the universality of sigma=-2/3 which might be a one-dimensional footprint of a tricritical version of the Yang-Lee edge singularity possibly present also in higher-dimensional spin models.8engArtigo10.1103/PhysRevE.82.051108WOS:000283846200002Acesso restritoWOS000283846200002.pdf8279393876415608