Critical exponents for nuclear multifragmentation: Dynamical lattice model

We present a dynamical and dissipative lattice model, designed to mimic nuc lear multifragmentation. Monte Carlo simulations with this model show a cle ar signature of critical behaviour and reproduce experimentally observed co rrelations. In particular, using techniques devised for finite systems, we could obtain two of its critical exponents, whose values are in agreement w ith those of the universality class to which nuclear multifragmentation is supposed to belong. (C) 1998 Elsevier Science B.V.