358 citations · 725 across the 13 of their papers we have counts for
5 papers · 1 filter
Anomalous scaling in a shell model of helical turbulence
P. D. Ditlevsen, P. Giuliani
In a helical flow there is a subrange of the inertial range in which there is a cascade of both energy and helicity. In this range the scaling exponents associated with the cascade…
Cascades in helical turbulence
P. D. Ditlevsen, P. Giuliani
The existence of a second quadratic inviscid invariant, the helicity, in a turbulent flow leads to coexisting cascades of energy and helicity. An equivalent of the four-fifth law f…
Power Laws in Solar Flares: Self-Organized Criticality or Turbulence?
Guido Boffetta, Vincenzo Carbone, Paolo Giuliani +2
We study the time evolution of Solar Flares activity by looking at the statistics of quiescent times between successive bursts. The analysis of 20 years of data reveals a p…
A note on shell models for MHD Turbulence
P. Giuliani, V. Carbone
We investigate the time evolution of two different (GOY-like) shell models which have been recently proposed to describe the gross features of MHD turbulence. We see that, even if…
An extension of the Lyapunov analysis for the predictability problem
G. Boffetta, P. Giuliani, G. Paladin +1
The predictability problem for systems with different characteristic time scales is investigated. It is shown that even in simple chaotic dynamical systems, the leading Lyapunov ex…