BEGIN:VCALENDAR VERSION:2.0 CALSCALE:GREGORIAN PRODID:iCalendar-Ruby BEGIN:VEVENT CATEGORIES:Lectures & Presentations DESCRIPTION:Physics Colloquium | Statistical Physics in Social Networks: Po larization\, Echo Chambers and Ideologies\, Nov. 20\n\nThe Physics & Astron omy Colloquium Series presents Igor Sokolov of Humboldt-Universität zu Berl in on “Statistical Physics in Social Networks: Polarization\, Echo Chambers and Ideologies\,” on Friday\, Nov. 20\, at 4:10 p.m. at an Online Departme ntal Colloquium.\n\nJoin on your computer or mobile appClick here to join t he meetingOr call in (audio only)+1 614-706-6572\,\,128002949# United Sta tes\, Columbus Phone Conference ID: 128 002 949#Abstract: Echo chambers and opinion polarization identified in several sociopolitical contexts and acr oss different social media raise concerns on their potential impact on the spread of misinformation and on the openness of debates. Despite increasing efforts\, the dynamics leading to the emergence of these phenomena remain unclear.\n\nIn the present talk I discuss the model we consider to give the minimal description of these phenomena. The model is based on the co-evolu tion of individuals' opinions and their contact network and foots on the fo llowing assumptions. The main assumption is that the agents are characteriz ed by heterogeneous activities and homophily\, i.e. are more prone to conta ct peers with similar opinions. The other one is a sufficient time scale se paration between the opinion's changes (slow) and the contact network's rea ction (fast). Compared with empirical data of polarized debates on Twitter\ , the model qualitatively reproduces the observed relation between users’ e ngagement and opinions\, as well as opinion segregation in the interaction network. If several topics are discussed simultaneously\, the model feature s phase transitions between consensus\, opinion polarization\, and ideologi cal states characterized by strong correlations of opinions even on seeming ly unrelated topics. DTEND:20201120T221000Z DTSTAMP:20241123T210042Z DTSTART:20201120T211000Z LOCATION: SEQUENCE:0 SUMMARY:Physics Colloquium | Statistical Physics in Social Networks: Polari zation\, Echo Chambers and Ideologies\, Nov. 20 UID:tag:localist.com\,2008:EventInstance_34476603904593 URL:https://calendar.ohio.edu/event/physics_colloquium_opinion_formation_th eory END:VEVENT END:VCALENDAR