Critical behavior of the spin-3/2 Blume-Capel model on a random two-dimensional lattice

AUTOR(ES)

Lima, F. W. S., Plascak, J. A.

FONTE

Brazilian Journal of Physics

DATA DE PUBLICAÇÃO

2006-09

RESUMO

We investigate the critical properties of the spin-3/2 Blume-Capel model in two dimensions on a random lattice with quenched connectivity disorder. The disordered system is simulated by applying the cluster hybrid Monte Carlo update algorithm and re-weighting techniques. We calculate the critical temperature as well as the critical point exponents gamma/n, b/n, a/nu, and nu. We find that, contrary of what happens to the spin-1/2 case, this random system does not belong to the same universality class as the regular two-dimensional ferromagnetic model.

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