@article{eprints1870,
          author = {Alessandro Chessa and Enzo Marinari and Alessandro Vespignani},
       publisher = {American Physical Society},
            note = {{\copyright} 1998 American Physical Society},
         journal = {Physical Review Letters},
            year = {1998},
           title = {Energy constrained sandpile models},
           pages = {4217--4220},
          volume = {80},
           month = {May},
        keywords = {PACS: 64.60.Lx, 05.40.+j, 05.70.Ln, 46.10.+z
},
        abstract = {We study two driven dynamical systems with conserved energy. The two automata contain the basic dynamical rules of the Bak, Tang, and Wiesenfeld sandpile model. In addition a global constraint on the energy contained in the lattice is imposed. In the limit of an infinitely slow driving of the system, the conserved energy E becomes the only parameter governing the dynamical behavior of the system. Both models show scale-free behavior at a critical value Ec of the fixed energy. The scaling with respect to the relevant scaling field points out that the developing of critical correlations is in a different universality class than self-organized critical sandpiles. Despite this difference, the activity (avalanche) probability distributions appear to coincide with the one of the standard self-organized critical sandpile.},
             url = {http://eprints.imtlucca.it/1870/}
}