Non-equilibrium phase transition in negotiation dynamics

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dc.creatorBaronchelli, A.
dc.creatorDall'Asta, L.
dc.creatorBarrat, A.
dc.creatorLoreto, V.
dc.date2006-11-28
dc.date2007-07-23
dc.date.accessioned2026-07-07T08:40:17Z
dc.date.available2026-07-07T08:40:17Z
dc.descriptionWe introduce a model of negotiation dynamics whose aim is that of mimicking the mechanisms leading to opinion and convention formation in a population of individuals. The negotiation process, as opposed to ``herding-like'' or ``bounded confidence'' driven processes, is based on a microscopic dynamics where memory and feedback play a central role. Our model displays a non-equilibrium phase transition from an absorbing state in which all agents reach a consensus to an active stationary state characterized either by polarization or fragmentation in clusters of agents with different opinions. We show the exystence of at least two different universality classes, one for the case with two possible opinions and one for the case with an unlimited number of opinions. The phase transition is studied analytically and numerically for various topologies of the agents' interaction network. In both cases the universality classes do not seem to depend on the specific interaction topology, the only relevant feature being the total number of different opinions ever present in the system.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0611717
dc.identifierhttp://arxiv.org/abs/cond-mat/0611717
dc.identifierPhys. Rev. E 76, 051102 (2007)
dc.identifierdoi:10.1103/PhysRevE.76.051102
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/141331
dc.subjectStatistical Mechanics
dc.subjectMultiagent Systems
dc.subjectPhysics and Society
dc.subjectPopulations and Evolution
dc.titleNon-equilibrium phase transition in negotiation dynamics
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