The 2D Ising ferromagnet: spreading of damage and its conjugate field

FRANCISCO TAMARIT; LADARIO DA SILVA

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL

IOP PUBLISHING LTD

Lugar: Londres; Año: 1994 vol. 27 p. 809 - 812

1751-8113

We study, thmugh numerical simulations, the spreading of damage on the bidimensional ferromagnetic Ising model submitted m a new kind of extemal field h recently inmduced in the literature in the context of cellular automata. The field h is defined as the frequency al which different random numbers are used for updating the two replicas. We show thai h is the conjugate field to the Hamming distance. i.e. it deshoys the dynamical continous transition observed at h = 0, and the associated susceptibility diverges al the critical temperature.