Li, Ying; Kong, Xiang-Mu - In: Physica A: Statistical Mechanics and its Applications 356 (2005) 2, pp. 589-597
We study the critical properties of the S4 model on diamond-type hierarchical lattices in the presence of an external magnetic field. It is assumed that for this type of inhomogenous fractal lattice, the Gaussian distribution constant, the four-spins interaction parameter and the external...
