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DC conductive percolation of 2-D fractal random network
Young, Tai-Fa; Fang, Huey-Jen - In: Physica A: Statistical Mechanics and its Applications 281 (2000) 1, pp. 276-281
's law. The DC percolation current below and above threshold pc exhibits a scaling behavior in four ranges. Due to the …
Persistent link: https://www.econbiz.de/10010589874
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Diffusion in deterministic fractals: a model for polymer electrolytes
Maitra, Minakshi; Mal, Dibyendu; Dasgupta, Ruma; … - In: Physica A: Statistical Mechanics and its Applications 346 (2005) 1, pp. 191-199
We present simulation results for random walks on a family of Sierpinski Carpets, under a periodically varying bias. The diffusivity obtained from these results shows a power-law variation of the bias, with frequency. The exponent depends on details of the carpet generator. We discuss...
Persistent link: https://www.econbiz.de/10010591848
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Discrete growth models on deterministic fractal substrate
Tang, Gang; Xun, Zhipeng; Wen, Rongji; Han, Kui; Xia, Hui; … - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 21, pp. 4552-4557
simulations. The evolving interface of the aggregates is described by the well-established Family–Vicsek dynamic scaling approach … Kim [S.B. Lee, J.M. Kim, Phys. Rev. E 80 (2009) 021101]. The Etching model also shows good scaling behavior. We conjecture …
Persistent link: https://www.econbiz.de/10011062568
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When is a network epidemic hard to eliminate?
Drakopoulos, Kimon; Ozdaglar, Asuman E.; Tsitsiklis, John N. - In: Mathematics of operations research 42 (2017) 1, pp. 1-14
Persistent link: https://www.econbiz.de/10011654542
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Critical behavior of a one-dimensional contact process with time-uncorrelated disorder
Fulco, U.L.; Barbosa, P.H.R.; Lyra, M.L. - In: Physica A: Statistical Mechanics and its Applications 388 (2009) 18, pp. 3785-3790
investigated. We develop simulations on finite chains and explore the finite size scaling hypothesis to obtain estimates for the … derived from the usual short-time dynamics scaling. We found that, contrary to the behavior of the contact-process with … quenched disorder which displays an infinite randomness critical point with activated scaling, the contact process with time …
Persistent link: https://www.econbiz.de/10010874692
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Modeling market fluctuations under investor sentiment with a Hawkes-Contact process
Zhang, Junhuan; Wen, Jiaqi; Chen, Jing - In: The European journal of finance 29 (2023) 1, pp. 17-32
Persistent link: https://www.econbiz.de/10014322445
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Quasi-stationary simulation of the contact process
Dickman, Ronald; Martins de Oliveira, Marcelo - In: Physica A: Statistical Mechanics and its Applications 357 (2005) 1, pp. 134-141
We review a recently devised Monte Carlo simulation method for the direct study of quasi-stationary properties of stochastic processes with an absorbing state. The method is used to determine the static correlation function and the interparticle gap-length distribution in the critical...
Persistent link: https://www.econbiz.de/10010590413
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Cluster variation approximations for a contact process living on a graph
Peyrard, Nathalie; Franc, Alain - In: Physica A: Statistical Mechanics and its Applications 358 (2005) 2, pp. 575-592
A model classically used for modelling the spread of an infectious diseases in a network is the time-continuous contact process, which is one simple example of an interacting particles system. It displays a non-equilibrium phase transition, related to the burst of an epidemic within a population...
Persistent link: https://www.econbiz.de/10010591454
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Cluster size distribution of infection in a system of mobile agents
González, M.C.; Herrmann, H.J.; Araújo, A.D. - In: Physica A: Statistical Mechanics and its Applications 356 (2005) 1, pp. 100-106
Clusters of infected individuals are defined on data from health laboratories, but this quantity has not been defined and characterized by epidemy models on statistical physics. For a system of mobile agents we simulate a model of infection without immunization and show that all the moments of...
Persistent link: https://www.econbiz.de/10011059927
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Tricriticality in generalized Schloegl models for autocatalysis: Lattice-gas realization with particle diffusion
Guo, Xiaofang; Unruh, Daniel K.; Liu, Da-Jiang; Evans, … - In: Physica A: Statistical Mechanics and its Applications 391 (2012) 3, pp. 633-646
We analyze lattice–gas reaction–diffusion models which include spontaneous annihilation, autocatalytic creation, and diffusion of particles, and which incorporate the particle creation mechanisms of both Schloegl’s first and second models. For fixed particle diffusion or hop rate,...
Persistent link: https://www.econbiz.de/10011061591