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Anomalous diffusion originated by two Markovian hopping-trap mechanisms 

Vitali, S.Autoridad BCAM; Paradisi, P.Autoridad BCAM; Pagnini, G.Autoridad BCAM (2022)
We show through intensive simulations that the paradigmatic features of anomalous diffusion are indeed the features of a (continuous-time) random walk driven by two different Markovian hopping-trap mechanisms. If $p ...
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Fractional Diffusion and Medium Heterogeneity: The Case of the Continuos Time Random Walk 

Sposini, V.; Vitali, S.Autoridad BCAM; Paradisi, P.Autoridad BCAM; Pagnini, G.Autoridad BCAM (2021-07-24)
In this contribution we show that fractional diffusion emerges from a simple Markovian Gaussian random walk when the medium displays a power-law heterogeneity. Within the framework of the continuous time random walk, the ...
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A hypothesis about parallelism vs. seriality in dreams 

Barcaro, U.; Paradisi, P.Autoridad BCAM; Sebastiani, L. (2019-10-10)
The current article discusses the hypothesis about parallelism vs. Seriality in dreams. The process of dream building implies the construction of a complex network of closely interrelated sources. On the other hand, the ...
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Gaussian processes in complex media: new vistas on anomalous diffusion 

Di Tullio, F.; Paradisi, P.Autoridad BCAM; Spigler, R.; Pagnini, G.Autoridad BCAM (2019-09)
Normal or Brownian diffusion is historically identified by the linear growth in time of the variance and by a Gaussian shape of the displacement distribution. Processes departing from the at least one of the above conditions ...
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Finite-energy Lévy-type motion through heterogeneous ensemble of Brownian particles 

Sliusarenko, O.Autoridad BCAM; Vitali, S.Autoridad BCAM; Sposini, V.; Paradisi, P.Autoridad BCAM; Chechkin, A.V.; Castellani, G.; Pagnini, G.Autoridad BCAM (2019-02-01)
Complex systems are known to display anomalous diffusion, whose signature is a space/time scaling $x \sim t^\delta$ with $\delta \neq 1/2$ in the probability density function (PDF). Anomalous diffusion can emerge jointly ...
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Centre-of-mass like superposition of Ornstein-Uhlenbeck processes: A pathway to non-autonomous stochastic differential equations and to fractional diffusion 

D’Ovidio, M.; Vitali, S.Autoridad BCAM; Sposini, V.; Sliusarenko, O.Autoridad BCAM; Paradisi, P.Autoridad BCAM; Castellani, G.; Pagnini, G.Autoridad BCAM (2018-10-25)
We consider an ensemble of Ornstein–Uhlenbeck processes featuring a population of relaxation times and a population of noise amplitudes that characterize the heterogeneity of the ensemble. We show that the centre-of-mass ...
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Langevin equation in complex media and anomalous diffusion 

Vitali, S.Autoridad BCAM; Sposini, V.; Sliusarenko, O.Autoridad BCAM; Paradisi, P.Autoridad BCAM; Castellani, G.; Pagnini, G.Autoridad BCAM (2018-07-30)
The problem of biological motion is a very intriguing and topical issue. Many efforts are being focused on the development of novel modelling approaches for the description of anomalous diffusion in biological systems, such ...
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The challenge of brain complexity: A brief discussion about a fractal intermittency-based approach 

Paradisi, P.Autoridad BCAM; Righi, M.; Barcaro, U. (2016-10-30)
In the last years, the complexity paradigm is gaining momentum in many research fields where large multidimensional datasets are made available by the advancements in instrumental technology. A complex system is a ...
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Fractional kinetics emerging from ergodicity breaking in random media 

Molina-Garcia, D.; Minh Pham, T.; Paradisi, P.Autoridad BCAM; Manzo, C.; Pagnini, G.Autoridad BCAM (2016)
We present a modelling approach for diffusion in a complex medium characterized by a random lengthscale. The resulting stochastic process shows subdiffusion with a behavior in qualitative agreement with single particle ...
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Scaling law of diffusivity generated by a noisy telegraph signal with fractal intermittency 

Paradisi, P.Autoridad BCAM; Allegrini, P. (2015-12-31)
In many complex systems the non-linear cooperative dynamics determine the emergence of self-organized, metastable, structures that are associated with a birth-death process of cooperation. This is found to be described by ...
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Paradisi, P. (12)
Pagnini, G. (7)Vitali, S. (5)Sposini, V. (4)Castellani, G. (3)Sliusarenko, O. (3)Allegrini, P. (2)Barcaro, U. (2)Chechkin, A.V. (1)Chiarugi, D. (1)... másSubjectanomalous diffusion (7)fractional diffusion (4)biological transport (2)Complex systems (2)Fractal intermittency (2)Anomalous solute crowding (1)Biomedical signal processing (1)biophysics (1)Brain events (1)Center of mass (1)... másFecha2022 (1)2021 (1)2019 (3)2018 (2)2016 (2)2015 (3)

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