Browsing by Author "Boguña Espinal, Marian"
Now showing items 113 of 13

Absence of epidemic threshold in scalefree networks with degree correlations
Boguña Espinal, Marian; Pastor Satorras, Romualdo; Vespignani, Alessandro (American Institute of Physics (AIP), 20030115)
Article
Open AccessRandom scalefree networks have the peculiar property of being prone to the spreading of infections. Here we provide for the susceptibleinfectedsusceptible model an exact result showing that a scalefree degree distribution ... 
Class of correlated random networks with hidden variables
Boguña Espinal, Marian; Pastor Satorras, Romualdo (200309)
Article
Open AccessWe study a class of models of correlated random networks in which vertices are characterized by hidden variables controlling the establishment of edges between pairs of vertices. We find analytical expressions for the main ... 
Correlations in complex networks
Serrano Moral, Maria Angeles; Boguña Espinal, Marian; Pastor Satorras, Romualdo; Vespignani, Alessandro (20070101)
Part of book or chapter of book
Restricted access  publisher's policyThis book is the culmination of three years of research effort on a multidisciplinary project in which physicists, mathematicians, computer scientists and social scientists worked together to arrive at a unifying picture ... 
Correlations in weighted networks
Serrano Moral, Maria Angeles; Boguña Espinal, Marian; Pastor Satorras, Romualdo (200611)
Article
Open AccessWe develop a statistical theory to characterize correlations in weighted networks. We define the appropriate metrics quantifying correlations and show that strictly uncorrelated weighted networks do not exist due to the ... 
Cutoffs and finite size effects in scalefree networks
Boguña Espinal, Marian; Pastor Satorras, Romualdo; Vespignani, Alessandro (Springer, 20040301)
Article
Open AccessWe analyze the degree distribution’s cutoff in finite size scalefree networks. We show that the cutoff behavior with the number of vertices N is ruled by the topological constraints induced by the connectivity structure ... 
Diffusionannihilation processes in complex networks
Catanzaro, M; Boguña Espinal, Marian; Pastor Satorras, Romualdo (20050510)
Article
Open AccessWe present a detailed analytical study of the A+A¿/0 diffusionannihilation process in complex networks. By means of microscopic arguments, we derive a set of rate equations for the density of A particles in vertices of a ... 
Epidemic spreading in correlated complex networks
Boguña Espinal, Marian; Pastor Satorras, Romualdo (200210)
Article
Open AccessWe study a dynamical model of epidemic spreading on complex networks in which there are explicit correlations among the node’s connectivities. For the case of Markovian complex networks, showing only correlations between ... 
Equivalence between NonMarkovian and Markovian Dynamics in Epidemic Spreading Processes
Gleeson, J P; Boguña Espinal, Marian; Starnini, Michele (American Institute of Physics (AIP), 20170324)
Article
Open AccessA general formalism is introduced to allow the steady state of nonMarkovian processes on networks to be reduced to equivalent Markovian processes on the same substrates. The example of an epidemic spreading process is ... 
Generation of uncorrelated random scalefree networks
Catanzaro, Michele; Boguña Espinal, Marian; Pastor Satorras, Romualdo (200502)
Article
Open AccessUncorrelated random scalefree networks are useful null models to check the accuracy and the analytical solutions of dynamical processes defined on complex networks. We propose and analyze a model capable of generating ... 
Langevin approach for the dynamics of the contact process on annealed scalefree networks
Boguña Espinal, Marian; Castellano, C; Pastor Satorras, Romualdo (20090319)
Article
Open AccessWe study the dynamics of the contact process, one of the simplest nonequilibrium stochastic processes, taking place on a scalefree network. We consider the network topology as annealed, i.e., all links are rewired at each ... 
Models of social networks based on social distance attachment
Boguña Espinal, Marian; Pastor Satorras, Romualdo; DíazGuilera, A; Arenas, A (200411)
Article
Open AccessWe propose a class of models of social network formation based on a mathematical abstraction of the concept of social distance. Social distance attachment is represented by the tendency of peers to establish acquaintances ... 
The interconnected wealth of nations: shock propagation on global tradeinvestment multiplex networks
Starnini, Michele; Boguña Espinal, Marian; Serrano, M.Angels (Nature, 20190911)
Article
Open AccessThe increasing integration of world economies, which organize in complex multilayer networks of interactions, is one of the critical factors for the global propagation of economic crises. We adopt the network science ... 
Topology and correlations in structured scalefree networks
Vázquez, A; Boguña Espinal, Marian; Moreno, Y; Pastor Satorras, Romualdo; Vespignani, Alessandro (200304)
Article
Open AccessWe study a recently introduced class of scalefree networks showing a high clustering coefficient and nontrivial connectivity correlations. We find that the connectivity probability distribution strongly depends on the ...