کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1866693 1038042 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Noise-induced absorbing phase transition in a model of opinion formation
ترجمه فارسی عنوان
انتقال فاز جذب ناشی از سر و صدا در یک مدل تشخیص افکار
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
چکیده انگلیسی


• Noise and disorder in the kinetic exchange opinion model.
• Presence of absorbing states.
• Three distinct types of nonequilibrium phase transitions.
• Two universality classes.

In this work we study a 3-state (+1, −1, 0) opinion model in the presence of noise and disorder. We consider pairwise competitive interactions, with a fraction p of those interactions being negative (disorder). Moreover, there is a noise q that represents the probability of an individual spontaneously change his opinion to the neutral state. Our aim is to study how the increase/decrease of the fraction of neutral agents affects the critical behavior of the system and the evolution of opinions. We derive analytical expressions for the order parameter of the model, as well as for the stationary fraction of each opinion, and we show that there are distinct phase transitions. One is the usual ferro–paramagnetic transition, that is in the Ising universality class. In addition, there are para-absorbing and ferro-absorbing transitions, presenting the directed percolation universality class. Our results are complemented by numerical simulations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 380, Issue 34, 6 August 2016, Pages 2632–2636
نویسندگان
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