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pro vyhledávání: '"de Nigris, Sarah"'
Autor:
De Nigris, Sarah
Dans cette thèse, nous discutons l'influence d'un réseau qui possède une topologie non triviale sur les propriétés collectives d'un modèle hamiltonien pour spins,le modèle $XY$, défini sur ces réseaux.Nous nous concentrons d'abord sur la top
Externí odkaz:
http://www.theses.fr/2014AIXM4718
Publikováno v:
Phys. Rev. E 96, 012312 (2017)
There is recent evidence that the $XY$ spin model on complex networks can display three different macroscopic states in response to the topology of the network underpinning the interactions of the spins. In this work, we present a novel way to charac
Externí odkaz:
http://arxiv.org/abs/1611.01330
Publikováno v:
Phys. Rev. E 95, 022113 (2017)
Anomalous diffusion processes, in particular superdiffusive ones, are known to be efficient strategies for searching and navigation by animals and also in human mobility. One way to create such regimes are L\'evy flights, where the walkers are allowe
Externí odkaz:
http://arxiv.org/abs/1606.00158
Publikováno v:
Discontinuity, Nonlinearity, and Complexity 5(4) p. 427-435 (2016)
The so-called chaotic states that emerge on the model of $XY$ interacting on regular critical range networks are analyzed. Typical time scales are extracted from the time series analysis of the global magnetization. The large spectrum confirms the ch
Externí odkaz:
http://arxiv.org/abs/1604.03380
Many dynamical processes on real world networks display complex temporal patterns as, for instance, a fat-tailed distribution of inter-events times, leading to heterogeneous waiting times between events. In this work, we focus on distributions whose
Externí odkaz:
http://arxiv.org/abs/1602.00643
Autor:
Donato, Irene, Gori, Matteo, Pettini, Marco, Petri, Giovanni, De Nigris, Sarah, Franzosi, Roberto, Vaccarino, Francesco
Persistent homology analysis, a recently developed computational method in algebraic topology, is applied to the study of the phase transitions undergone by the so-called XY-mean field model and by the phi^4 lattice model, respectively. For both mode
Externí odkaz:
http://arxiv.org/abs/1601.03641
Autor:
De Nigris, Sarah, Leoncini, Xavier
Publikováno v:
Physical Review E, American Physical Society, 2015, 91 (4) 042809
The influence of networks topology on collective properties of dynamical systems defined upon it is studied in the thermodynamic limit. A network model construction scheme is proposed where the number of links, the average eccentricity and the cluste
Externí odkaz:
http://arxiv.org/abs/1409.5016
Autor:
De Nigris, Sarah, Leoncini, Xavier
Publikováno v:
Physical Review E 88, 1 (2013) 012131
We study the XY-rotors model on small networks whose number of links scales with the system size $N_{links}\sim N^{\gamma}$, where $1\le\gamma\le2$. We first focus on regular one dimensional rings in the microcanonical ensemble. For $\gamma<1.5$ the
Externí odkaz:
http://arxiv.org/abs/1304.4854
Autor:
De Nigris, Sarah, Leoncini, Xavier
Publikováno v:
EPL 101 (2013) 10002
We study an XY-rotor model on regular one dimensional lattices by varying the number of neighbours. The parameter $2\ge\gamma\ge1$ is defined. $\gamma=2$ corresponds to mean field and $\gamma=1$ to nearest neighbours coupling. We find that for $\gamm
Externí odkaz:
http://arxiv.org/abs/1207.6550
Autor:
Stella, Massimo1,2 (AUTHOR) massimo.stella@inbox.com, de Nigris, Sarah3 (AUTHOR), Aloric, Aleksandra4 (AUTHOR), Siew, Cynthia S. Q.5,6 (AUTHOR)
Publikováno v:
PLoS ONE. 10/17/2019, Vol. 14 Issue 10, p1-21. 21p.
