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Cecconi F, Puglisi A, Marconi UM, et al. Noise activated granular dynamics. Phys Rev Lett. 2003;90(6):064301doi: 10.1103/PhysRevLett.90.064301.
Cecconi, F., Puglisi, A., Marconi, U. M., & Vulpiani, A. (2003). Noise activated granular dynamics. Physical review letters, 90(6), 064301. https://doi.org/10.1103/PhysRevLett.90.064301
Cecconi, Fabio, et al. "Noise activated granular dynamics." Physical review letters vol. 90,6 (2003): 064301. doi: https://doi.org/10.1103/PhysRevLett.90.064301
Cecconi F, Puglisi A, Marconi UM, Vulpiani A. Noise activated granular dynamics. Phys Rev Lett. 2003 Feb 14;90(6):064301. doi: 10.1103/PhysRevLett.90.064301. Epub 2003 Feb 10. PMID: 12633295.
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Phys Rev Lett. 2003 Feb 14;90(6):064301. doi: 10.1103/PhysRevLett.90.064301. Epub 2003 Feb 10.

Noise activated granular dynamics.

Physical review letters

Fabio Cecconi, Andrea Puglisi, Umberto Marini Bettolo Marconi, Angelo Vulpiani

Affiliations

  1. Dipartimento di Fisica, Università La Sapienza and INFM Center for Statistical Mechanics and Complexity, Piazzale A. Moro 2, 00185 Rome, Italy.

PMID: 12633295 DOI: 10.1103/PhysRevLett.90.064301

Abstract

We study the behavior of two particles moving in a bistable potential, colliding inelastically with each other and driven by a stochastic heat bath. The system has the tendency to clusterize, placing the particles in the same well at low drivings, and to fill all of the available space at high temperatures. We show that the hopping over the potential barrier occurs following the Arrhenius rate, where the heat bath temperature is replaced by the granular temperature. Moreover, within the clusterized "phase" one encounters two different scenarios: For moderate inelasticity, the jumps from one well to the other involve one particle at a time, whereas for strong inelasticity the two particles hop simultaneously.

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