Neves, Ubiraci P.C.; Felı́cio, J.R. Drugowich de - In: Physica A: Statistical Mechanics and its Applications 258 (1998) 1, pp. 211-220
We investigate two-dimensional Ising systems with multispin interactions of three- (m=3) and four-body terms (m=4). The application of a new type of finite-size algorithm of de Oliveira allow us to clearly distinguish a first-order transition (in the m=4 case) from a continuous one (in the m=3...