Author Archives: Antonio Rago

A density of states approach to the overlap problem

Monte-Carlo methods are widely used in theoretical physics, statistical mechanics and condensed matter. Most of the applications have relied on importance sampling, which allows us to evaluate stochastically with a controllable error multi-dimensional integrals of localised functions. In lattice gauge theories, most quantities of interest can be expressed in the path integral formalism as ensemble

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The Abelian Sandpile Model

The Abelian Sandpile Model is a cellular automaton whose discrete dynamics reaches an out-of-equilibrium steady state resembling avalanches in piles of sand. This system shows, in an apparently unpredictable way, bursts of activity such as avalanches. This kind of model can be eventually driven into an out-of-equilibrium steady state. We propose a numerical study of

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