198 citations · 560 across the 28 of their papers we have counts for
5 papers · 1 filter
A thermodynamical fiber bundle model for the fracture of disordered materials
Alessandro Virgilii, Alberto Petri, Silvio R. Salinas
We investigate a disordered version of a thermodynamic fiber bundle model proposed by Selinger, Wang, Gelbart, and Ben-Shaul a few years ago. For simple forms of disorder, the mode…
Phase separation of the Potts model in que square lattice
Miguel Ibanez de Berganza, Ezequiel E. Ferrero, Sergio A. Cannas +2
When the two dimensional q-color Potts model in the square lattice is quenched at zero temperature with Glauber dynamics, the energy decreases in time following an Allen-Cahn power…
Phase ordering and symmetries of the Potts model
Miguel Ibanez de Berganza, Vittorio Loreto, Alberto Petri
We have studied the ordering of the q-colours Potts model in two dimensions on a square lattice. On the basis of our observations we propose that if q is large enough the system is…
Roughness and Finite Size Effect in the NYSE Stock-Price Fluctuations
V. Alfi, F. Coccetti, A. Petri +1
We consider the roughness properties of NYSE (New York Stock Exchange) stock-price fluctuations. The statistical properties of the data are relatively homogeneous within the same d…
Exact Results for the Roughness of a Finite Size Random Walk
V. Alfi, F. Coccetti, M. Marotta +2
We consider the role of finite size effects on the value of the effective Hurst exponent H. This problem is motivated by the properties of the high frequency daily stock-prices. Fo…