3.5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of ParmaIT415 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaIT88 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di FirenzeIT84 papers
- Istituto Nazionale di Fisica NucleareIT68 papers
- Sapienza University of RomeIT61 papers
- Centre National de la Recherche ScientifiqueFR52 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PadovaIT50 papers
- University of PisaIT50 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT49 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT48 papers
- University of FlorenceIT44 papers
- Max Planck Institute for Gravitational PhysicsDE42 papers
44 papers · 1 filter
Fast rare events in exit times distributions of jump processes
Alessandro Vezzani, Raffaella Burioni
Rare events in the first-passage distributions of jump processes are capable of triggering anomalous reactions or series of events. Estimating their probability is particularly imp…
Anomalous finite-size scaling in higher-order processes with absorbing states
Alessandro Vezzani, Miguel A. Muñoz, Raffaella Burioni
We study standard and higher-order birth-death processes on fully connected networks, within the perspective of large-deviation theory (also referred to as Wentzel-Kramers-Brilloui…
Hybrid-type synchronization transitions: where marginal coherence, scale-free avalanches, and bistability live together
Victor Buendía, Pablo Villegas, Raffaella Burioni +1
The human cortex is never at rest but in a state of sparse and noisy neural activity that can be detected at broadly diverse resolution scales. It has been conjectured that such a…
Feedback mechanisms for self-organization to the edge of a phase transition
Victor Buendía, Serena di Santo, Juan A. Bonachela +1
Scale-free outbursts of activity are commonly observed in physical, geological, and biological systems. The idea of self-organized criticality (SOC), introduced back in 1987 by Bak…
Rare events in stochastic processes with sub-exponential distributions and the Big Jump principle
Raffaella Burioni, Alessandro Vezzani
Rare events in stochastic processes with heavy-tailed distributions are controlled by the big jump principle, which states that a rare large fluctuation is produced by a single eve…
Self-organized bistability and its possible relevance for brain dynamics
Victor Buendía, Serena di Santo, Pablo Villegas +2
Self-organized bistability (SOB) is the counterpart of 'self-organized criticality' (SOC), for systems tuning themselves to the edge of bistability of a discontinuous phase transit…
Rare events in generalized Lévy Walks and the Big Jump principle
Alessandro Vezzani, Eli Barkai, Raffaella Burioni
The prediction and control of rare events is an important task in disciplines that range from physics and biology, to economics and social science. The Big Jump principle deals wit…
Transport in disordered systems: the single big jump approach
Wanli Wang, Alessandro Vezzani, Raffaella Burioni +1
In a growing number of strongly disordered and dense systems, the dynamics of a particle pulled by an external force field exhibits super-diffusion. In the context of glass forming…
The low-temperature phase in the two-dimensional long-range diluted XY model
Fabiana Cescatti, Miguel Ibáñez-Berganza, Alessandro Vezzani +1
The critical behaviour of statistical models with long-range interactions exhibits distinct regimes as a function of , the power of the interaction strength decay. For large…
The Single Big Jump Principle in Physical Modelling
Alessandro Vezzani, Eli Barkai, Raffaella Burioni
The big jump principle is a well established mathematical result for sums of independent and identically distributed random variables extracted from a fat tailed distribution. It s…
Self-Organized Bistability Associated With First-Order Phase Transitions
Serena di Santo, Raffaella Burioni, Alessandro Vezzani +1
Self-organized criticality elucidates the conditions under which physical and biological systems tune themselves to the edge of a second-order phase transition, with scale invarian…
Phase ordering in disordered and inhomogeneous systems
Federico Corberi, Eugenio Lippiello, Raffaella Burioni +2
We study numerically the coarsening dynamics of the Ising model on a regular lattice with random bonds and on deterministic fractal substrates. We propose a unifying interpretation…
Statistical physics of nonlinear wave interaction
Fabrizio Antenucci, Miguel Ibáñez Berganza, Luca Leuzzi
The thermodynamic properties of vector (O(2) and Complex Spherical) models with four-body interactions are analyzed. When defined in dense topologies, these are effective models fo…
Superdiffusion and Transport in 2d-systems with Lévy Like Quenched Disorder
Raffaella Burioni, Enrico Ubaldi, Alessandro Vezzani
We present an extensive analysis of transport properties in superdiffusive two dimensional quenched random media, obtained by packing disks with radii distributed according to a Lé…
Collective behaviours: from biochemical kinetics to electronic circuits
Elena Agliari, Adriano Barra, Raffaella Burioni +2
In this work we aim to highlight a close analogy between cooperative behaviors in chemical kinetics and cybernetics; this is realized by using a common language for their descripti…
Topological regulation of activation barriers on fractal substrates
Raffaella Burioni, Federico Corberi, Alessandro Vezzani
We study phase-ordering dynamics of a ferromagnetic system with a scalar order-parameter on fractal graphs. We propose a scaling approach, inspired by renormalization group ideas,…
The true reinforced random walk with bias
Elena Agliari, Raffaella Burioni, Guido Uguzzoni
We consider a self-attracting random walk in dimension d=1, in presence of a field of strength s, which biases the walker toward a target site. We focus on the dynamic case (true r…
Scattering lengths and universality in superdiffusive Lévy materials
R. Burioni, S. di Santo, S. Lepri +1
We study the effects of scattering lengths on Lévy walks in quenched one-dimensional random and fractal quasi-lattices, with scatterers spaced according to a long-tailed distributi…
Quantum Criticality in a Bosonic Josephson Junction
P. Buonsante, R. Burioni, E. Vescovi +1
In this paper we consider a bosonic Josephson junction described by a two-mode Bose-Hubbard model, and we thoroughly analyze a quantum phase transition occurring in the system in t…
Slow relaxation in microcanonical warming of a Ising lattice
Elena Agliari, Mario Casartelli, Alessandro Vezzani
We study the warming process of a semi-infinite cylindrical Ising lattice initially ordered and coupled at the boundary to a heat reservoir. The adoption of a proper microcanonical…
Patterns of synchronization in the hydrodynamic coupling of active colloids
Giovanni M. Cicuta, Enrico Onofri, Marco Cosentino Lagomarsino +1
A system of active colloidal particles driven by harmonic potentials to oscillate about the vertices of a regular polygon, with hydrodynamic coupling between all particles, is desc…
Percolation on correlated random networks
Elena Agliari, Claudia Cioli, Enore Guadagnini
We consider a class of random, weighted networks, obtained through a redefinition of patterns in an Hopfield-like model and, by performing percolation processes, we get information…
Transport and Scaling in Quenched 2D and 3D Lévy Quasicrystals
Pierfrancesco Buonsante, Raffaella Burioni, Alessandro Vezzani
We consider correlated Lévy walks on a class of two- and three-dimensional deterministic self-similar structures, with correlation between steps induced by the geometrical distribu…
Metric characterization of cluster dynamics on the Sierpinski gasket
Elena Agliari, Mario Casartelli, Edoardo Vivo
We develop and implement an algorithm for the quantitative characterization of cluster dynamics occurring on cellular automata defined on an arbitrary structure. As a prototype for…