Boechat Beatriz; Cordeiro Claudette; Bonfim O. F. de Alcantara; Florencio J.; Barreto F.C. Sá
Description:
We study the effect of random bonds and fields on the dynamical behavior of the one-dimensional transverse Ising model with four-spin interactions. We consider finite chains of increasing size to determine the time-dependent correlation function and the longitudinal relaxation function of the infinite chain. In this fully disordered system we observe a crossover from a collective modetype of dynamics to that of a central regime.